| Patent | Date |
|---|
Optical ground tracking apparatus, systems, and methods for use with buried utility locators
Grant 11,428,814 - Olsson , et al. August 30, 2 | 2022-08-30 |
Systems and methods of using a sonde device with a sectional ferrite core structure
Grant 11,300,700 - Olsson , et al. April 12, 2 | 2022-04-12 |
Sonde devices including a sectional ferrite core structure
Grant 11,187,822 - Olsson , et al. November 30, 2 | 2021-11-30 |
Buried utility locating systems with optimized wireless data communication
Grant 11,175,427 - Olsson , et al. November 16, 2 | 2021-11-16 |
Buried object locator apparatus and methods
Grant 11,156,737 - Olsson , et al. October 26, 2 | 2021-10-26 |
Magnetic field canceling audio devices
Grant 11,146,892 - Merewether , et al. October 12, 2 | 2021-10-12 |
Pipe inspection system camera heads
Grant 11,132,781 - Olsson , et al. September 28, 2 | 2021-09-28 |
Satellite and magnetic field sonde apparatus and methods
Grant 11,119,238 - Olsson , et al. September 14, 2 | 2021-09-14 |
Utility locating systems, devices, and methods using radio broadcast signals
Grant 11,092,712 - Olsson , et al. August 17, 2 | 2021-08-17 |
Locating devices, systems, and methods using frequency suites for utility detection
Grant 11,073,632 - Olsson , et al. July 27, 2 | 2021-07-27 |
Utility locator apparatus, systems, and methods
Grant 11,029,439 - Olsson , et al. June 8, 2 | 2021-06-08 |
Utility locator apparatus and systems
Grant 10,989,830 - Olsson , et al. April 27, 2 | 2021-04-27 |
Magnetic utility locator devices and methods
Grant 10,983,240 - Olsson , et al. April 20, 2 | 2021-04-20 |
Multi-frequency locating systems and methods
Grant 10,983,239 - Olsson , et al. April 20, 2 | 2021-04-20 |
Boring inspection systems and methods
Grant 10,955,583 - Olsson , et al. March 23, 2 | 2021-03-23 |
Keyed current signal utility locating systems and methods
Grant 10,928,538 - Olsson , et al. February 23, 2 | 2021-02-23 |
Electronic marker devices and systems
Grant 10,859,727 - Olsson , et al. December 8, 2 | 2020-12-08 |
Phase-synchronized buried object transmitter and locator methods and apparatus
Grant 10,845,497 - Olsson , et al. November 24, 2 | 2020-11-24 |
User interface devices, apparatus, and methods
Grant 10,788,901 - Olsson , et al. September 29, 2 | 2020-09-29 |
Coaxial video push-cables for use in inspection systems
Grant 10,764,541 - Olsson , et al. Sep | 2020-09-01 |
Magnetic sensing buried utility locator including a camera
Grant 10,761,239 - Olsson , et al. Sep | 2020-09-01 |
Utility locator transmitter devices, systems, and methods with dockable apparatus
Grant 10,754,053 - Olsson , et al. A | 2020-08-25 |
Systems and methods for locating buried or hidden objects using sheet current flow models
Grant 10,753,722 - Merewether A | 2020-08-25 |
Locating devices, systems, and methods using frequency suites for utility detection
Grant 10,690,795 - Olsson , et al. | 2020-06-23 |
Buried locators systems and methods
Grant 10,677,820 - Olsson , et al. | 2020-06-09 |
Utility locating systems, devices, and methods using radio broadcast signals
Grant 10,670,766 - Olsson , et al. | 2020-06-02 |
Self-leveling inspection systems and methods
Grant 10,613,034 - Olsson , et al. | 2020-04-07 |
Dual antenna systems with variable polarization
Grant 10,608,348 - Bench , et al. | 2020-03-31 |
Utility locator devices, systems, and methods with satellite and magnetic field sonde antenna systems
Grant 10,571,594 - Olsson , et al. Feb | 2020-02-25 |
Magnetic field canceling audio speakers for use with buried utility locators or other devices
Grant 10,555,086 - Merewether , et al. Fe | 2020-02-04 |
Utility locating transmitter apparatus and methods
Grant 10,534,105 - Merewether , et al. Ja | 2020-01-14 |
Pipe inspection cable counter and overlay management system
Grant 10,527,402 - Olsson , et al. J | 2020-01-07 |
Magnetic manual user interface devices
Grant 10,528,074 - Olsson , et al. J | 2020-01-07 |
Magnetically sensed user interface devices
Grant 10,523,202 - Olsson , et al. Dec | 2019-12-31 |
Dual antenna systems with variable polarization
Grant 10,490,908 - Bench , et al. Nov | 2019-11-26 |
Magnetic sensing user interface device, methods, and apparatus
Grant 10,466,803 - Rutledge , et al. No | 2019-11-05 |
Semiconductor lighting devices and methods
Grant 10,401,017 - Merewether , et al. Sep | 2019-09-03 |
Utility Locator Devices, Systems, And Methods With Satellite And Magnetic Field Sonde Antenna Systems
App 20190257975 - Olsson; Mark S. ; et al. | 2019-08-22 |
Dual antenna systems with variable polarization
Grant 10374326 - | 2019-08-06 |
Optical ground tracking apparatus, systems, and methods for use with buried utility locators
Grant 10,324,188 - Olsson , et al. | 2019-06-18 |
Ground tracking devices and methods for use with a utility locator
Grant 10,317,559 - Olsson , et al. | 2019-06-11 |
Buried Object Locating Devices And Methods
App 20190137644 - Olsson; Mark S. ; et al. | 2019-05-09 |
Utility locator transmitter apparatus and methods
Grant 10,247,845 - Merewether , et al. | 2019-04-02 |
Utility Locating Transmitter Apparatus & Methods
App 20190041538 - Merewether; Ray ; et al. | 2019-02-07 |
Magnetic Field Canceling Audio Speakers For Use With Buried Utility Locators Or Other Devices
App 20190028812 - Merewether; Ray ; et al. | 2019-01-24 |
Flotation devices for high pressure environments
Grant 10,173,753 - Olsson , et al. J | 2019-01-08 |
Adjustable variable resolution inspection systems and methods
Grant 10,175,177 - Olsson , et al. J | 2019-01-08 |
Systems And Methods For Electronically Marking, Locating And Virtually Displaying Buried Utilities
App 20190004203 - Olsson; Mark S. ; et al. | 2019-01-03 |
Magnetic sensing user interface device methods and apparatus
Grant 10,121,617 - Rutledge , et al. November 6, 2 | 2018-11-06 |
Magnetic utility locator devices and methods
Grant 10,082,591 - Olsson , et al. September 25, 2 | 2018-09-25 |
Magnetic sensing buried object locator including a camera
Grant 10,082,599 - Olsson , et al. September 25, 2 | 2018-09-25 |
Buried object locators with dodecahedral antenna nodes
Grant 10,078,149 - Olsson , et al. September 18, 2 | 2018-09-18 |
Keyed current signal utility locating systems and methods
Grant 10,073,186 - Olsson , et al. September 11, 2 | 2018-09-11 |
Wireless Buried Pipe And Cable Locating Systems
App 20180252834 - Olsson; Mark S. ; et al. | 2018-09-06 |
User Interface Devices, Apparatus, And Methods
App 20180246584 - Olsson; Mark S. ; et al. | 2018-08-30 |
Omni-inducer transmitting devices and methods
Grant 10,042,072 - Olsson , et al. August 7, 2 | 2018-08-07 |
Gradient antenna coils and arrays for use in locating systems
Grant 10,031,253 - Olsson , et al. July 24, 2 | 2018-07-24 |
Self-leveling Inspection Systems And Methods
App 20180202940 - Olsson; Mark S. ; et al. | 2018-07-19 |
Buried object locating device with a plurality of spherical sensor balls that include a plurality of orthogonal antennae
Grant 9,989,662 - Olsson , et al. June 5, 2 | 2018-06-05 |
Electronic Marker Devices And Systems
App 20180128931 - Olsson; Mark S. ; et al. | 2018-05-10 |
Utility Locator Apparatus, Systems, And Methods
App 20180106926 - Olsson; Mark S. ; et al. | 2018-04-19 |
Utility locator apparatus, systems, and methods
Grant 9,945,976 - Olsson , et al. April 17, 2 | 2018-04-17 |
Multi-frequency locating system and methods
Grant 9,927,545 - Olsson , et al. March 27, 2 | 2018-03-27 |
Self-leveling inspection systems and methods
Grant 9,927,368 - Olsson , et al. March 27, 2 | 2018-03-27 |
Phase-synchronized buried object transmitter and locator methods and apparatus
Grant 9,927,546 - Olsson , et al. March 27, 2 | 2018-03-27 |
Utility locator transmitter devices, systems, and methods with dockable apparatus
Grant 9,891,337 - Olsson , et al. February 13, 2 | 2018-02-13 |
Magnetic manual user interface devices
Grant 9,870,021 - Olsson , et al. January 16, 2 | 2018-01-16 |
Optical ground tracking apparatus, systems, and methods
Grant 9,841,503 - Olsson , et al. December 12, 2 | 2017-12-12 |
Pipe inspection system camera heads
Grant 9,824,433 - Olsson , et al. November 21, 2 | 2017-11-21 |
Sonde devices including a sectional ferrite core
Grant 9,798,033 - Olsson , et al. October 24, 2 | 2017-10-24 |
Optical ground tracking apparatus, systems, and methods
Grant 9,784,837 - Olsson , et al. October 10, 2 | 2017-10-10 |
Electronic marker devices and systems
Grant 9,746,572 - Olsson , et al. August 29, 2 | 2017-08-29 |
Portable buried utility locating systems with current signal data communication
Grant 9,746,573 - Olsson , et al. August 29, 2 | 2017-08-29 |
Omni-inducer Transmitting Devices And Methods
App 20170235010 - Olsson; Mark S. ; et al. | 2017-08-17 |
Gradient Antenna Coils And Arrays For Use In Locating Systems
App 20170192120 - Olsson; Mark S. ; et al. | 2017-07-06 |
Semiconductor Lighting Devices And Methods
App 20170191651 - Merewether; Ray ; et al. | 2017-07-06 |
Buried object locating methods and apparatus using multiple electromagnetic signals
Grant 9,696,447 - Olsson , et al. July 4, 2 | 2017-07-04 |
Ground tracking devices and methods for use with a utility locator
Grant 9,696,448 - Olsson , et al. July 4, 2 | 2017-07-04 |
Adjustable Variable Resolution Inspection Systems And Methods
App 20170176344 - Olsson; Mark S. ; et al. | 2017-06-22 |
Nulled-signal utility locating devices, systems, and methods
Grant 9,684,090 - Olsson , et al. June 20, 2 | 2017-06-20 |
Magnetic sensing user interface device methods and apparatus using electromagnets and associated magnetic sensors
Grant 9,678,577 - Rutledge , et al. June 13, 2 | 2017-06-13 |
Utility Locating Systems, Devices, And Methods Using Radio Broadcast Signals
App 20170160420 - Olsson; Mark S. ; et al. | 2017-06-08 |
Boring inspection systems and methods
Grant 9,651,711 - Olsson , et al. May 16, 2 | 2017-05-16 |
Magnetically Sensed User Interface Devices
App 20170134024 - Olsson; Mark S. ; et al. | 2017-05-11 |
Locating Devices, Systems, And Methods Using Frequency Suites For Utility Detection
App 20170131422 - Olsson; Mark S. ; et al. | 2017-05-11 |
Phase-synchronized Buried Object Transmitter And Locator Methods And Apparatus
App 20170131425 - Olsson; Mark S. ; et al. | 2017-05-11 |
Quad-gradient coils for use in locating systems
Grant 9,638,824 - Olsson , et al. May 2, 2 | 2017-05-02 |
Economical magnetic locator apparatus and methods
Grant 9,632,202 - Olsson , et al. April 25, 2 | 2017-04-25 |
Pipe Inspection System Camera Heads
App 20170024872 - Olsson; Mark S. ; et al. | 2017-01-26 |
Adjustable Variable Resolution Inspection Systems And Methods
App 20170023492 - Olsson; Mark S. ; et al. | 2017-01-26 |
Optical Ground Tracking Apparatus, Systems, And Methods
App 20170023677 - Olsson; Mark S. ; et al. | 2017-01-26 |
Ground Tracking Devices And Methods For Use With A Utility Locator
App 20170017009 - Olsson; Mark S. ; et al. | 2017-01-19 |
Utility Locator Devices, Systems, And Methods With Satellite And Magnetic Field Sonde Antenna Systems
App 20170017010 - Olsson; Mark S. ; et al. | 2017-01-19 |
Magnetic sensing buried object locator including a camera
Grant 9,523,788 - Olsson , et al. December 20, 2 | 2016-12-20 |
Semiconductor lighting devices and methods
Grant 9,506,628 - Merewether , et al. November 29, 2 | 2016-11-29 |
Omni-inducer transmitting devices and methods
Grant 9,494,706 - Olsson , et al. November 15, 2 | 2016-11-15 |
Gradient antenna coils and arrays for use in locating systems
Grant 9,488,747 - Olsson , et al. November 8, 2 | 2016-11-08 |
Image-based mapping locating system
Grant 9,465,129 - Olsson , et al. October 11, 2 | 2016-10-11 |
Phase synchronized buried object locator apparatus, systems, and methods
Grant 9,435,907 - Olsson , et al. September 6, 2 | 2016-09-06 |
Magnetically sensed user interface devices
Grant 9,423,894 - Olsson , et al. August 23, 2 | 2016-08-23 |
Ground-tracking systems and apparatus
Grant 9,411,067 - Olsson , et al. August 9, 2 | 2016-08-09 |
Submersible lights with pressure compensation
Grant 9,388,973 - Olsson , et al. July 12, 2 | 2016-07-12 |
Buried Object Locator Apparatus and Systems
App 20160187522 - Olsson; Mark S. ; et al. | 2016-06-30 |
Coaxial Video Push-cables For Use In Inspection Systems
App 20160173829 - Olsson; Mark S. ; et al. | 2016-06-16 |
Gradient Antenna Coils And Arrays For Use In Locating Systems
App 20160141766 - Olsson; Mark S. ; et al. | 2016-05-19 |
Utility Locator Apparatus, Systems, And Methods
App 20160003961 - Olsson; Mark S. ; et al. | 2016-01-07 |
Utility Locating Transmitter Apparatus & Methods
App 20150355363 - Merewether; Ray ; et al. | 2015-12-10 |
Buried object locator apparatus with safety lighting array
Grant 9,207,350 - Olsson , et al. December 8, 2 | 2015-12-08 |
Economical Magnetic Locator Apparatus And Methods
App 20150338539 - Olsson; Mark S. ; et al. | 2015-11-26 |
Dual Antenna Systems With Variable Polarization
App 20150263434 - Bench; Stephanie M. ; et al. | 2015-09-17 |
Pipe inspection system with selective image capture
Grant 9,134,255 - Olsson , et al. September 15, 2 | 2015-09-15 |
Ground-tracking devices for use with a mapping locator
Grant 9,081,109 - Olsson , et al. July 14, 2 | 2015-07-14 |
Economical magnetic locator apparatus and method
Grant 9,057,754 - Olsson , et al. June 16, 2 | 2015-06-16 |
Electronic Marker Devices And Systems
App 20150123664 - Olsson; Mark S. ; et al. | 2015-05-07 |
Utility Locator Transmitter Devices, Systems, And Methods With Dockable Apparatus
App 20150077120 - Olsson; Mark S. ; et al. | 2015-03-19 |
Pipe inspection cable counter and overlay management system
Grant 8,970,211 - Olsson , et al. March 3, 2 | 2015-03-03 |
Deformable User Interface Devices, Apparatus, And Methods
App 20150009127 - Olsson; Mark S. ; et al. | 2015-01-08 |
Sonde Devices Including A Sectional Ferrite Core
App 20140320133 - Olsson; Mark S. ; et al. | 2014-10-30 |
Multi-frequency Locating Systems And Methods
App 20140312903 - Olsson; Mark S. ; et al. | 2014-10-23 |
Optical Ground Tracking Apparatus, Systems, And Methods
App 20140313321 - Olsson; Mark S. ; et al. | 2014-10-23 |
Ground-tracking Systems And Apparatus
App 20140285203 - Olsson; Mark S. ; et al. | 2014-09-25 |
Omni-inducer Transmitting Devices And Methods
App 20140266213 - Olsson; Mark S. ; et al. | 2014-09-18 |
Multi-frequency Locating Systems And Methods
App 20140191759 - Olsson; Mark S. ; et al. | 2014-07-10 |
Adaptive multichannel locator system for multiple proximity detection
Grant 8,773,133 - Olsson , et al. July 8, 2 | 2014-07-08 |
Sonde Devices Including A Sectional Ferrite Core Structure
App 20140167766 - Olsson; Mark S. ; et al. | 2014-06-19 |
Omni-inducer Transmitting Devices And Methods
App 20140159729 - Olsson; Mark S. ; et al. | 2014-06-12 |
Gradient Antenna Coils And Arrays For Use In Locating Systems
App 20140139223 - Olsson; Mark S. ; et al. | 2014-05-22 |
Multi-frequency Locating Systems And Methods
App 20140132269 - Olsson; Mark S. ; et al. | 2014-05-15 |
Quad-gradient Coils For Use In Locating Systems
App 20140132270 - Olsson; Mark S. ; et al. | 2014-05-15 |
Spring clips for use with locating transmitters
Grant 8,717,028 - Merewether , et al. May 6, 2 | 2014-05-06 |
Dual Antenna Systems With Variable Polarization
App 20140111376 - Bench; Stephanie M. ; et al. | 2014-04-24 |
Ground-tracking Systems And Apparatus
App 20140111208 - Olsson; Mark S. ; et al. | 2014-04-24 |
Deep submersible light with pressure compensation
Grant 8,632,230 - Olsson , et al. January 21, 2 | 2014-01-21 |
Method for simultaneously determining a plurality of different locations of the buried objects and simultaneously indicating the different locations to a user
Grant 8,564,295 - Olsson , et al. October 22, 2 | 2013-10-22 |
Systems And Methods For Locating Buried Or Hidden Objects Using Sheet Current Flow Models
App 20130245990 - Merewether; Ray | 2013-09-19 |
Phase Synchronized Buried Object Locator Apparatus, Systems, And Methods
App 20130200901 - Olsson; Mark S. ; et al. | 2013-08-08 |
Buried Object Locator Apparatus And Systems
App 20130127470 - Olsson; Mark S. ; et al. | 2013-05-23 |
Solar reflector apparatus with independently controlled bail-arms
Grant 8,426,792 - Olsson , et al. April 23, 2 | 2013-04-23 |
Drain cleaning apparatus with electronic cable monitoring system
Grant 8,413,347 - Gress , et al. April 9, 2 | 2013-04-09 |
Locator antenna with conductive bobbin
Grant 8,400,154 - Olsson , et al. March 19, 2 | 2013-03-19 |
Pipe inspection system with selective image capture
Grant 8,395,661 - Olsson , et al. March 12, 2 | 2013-03-12 |
Magnetically Sensed User Interface Apparatus And Devices
App 20120306603 - Olsson; Mark S. ; et al. | 2012-12-06 |
User Interface Devices, Apparatus, And Methods
App 20120256821 - Olsson; Mark S. ; et al. | 2012-10-11 |
Buried locators systems and methods
App 20120242341 - Olsson; Mark S. ; et al. | 2012-09-27 |
System and method for locating buried pipes and cables with a man portable locator and a transmitter in a mesh network
Grant 8,264,226 - Olsson , et al. September 11, 2 | 2012-09-11 |
Magnetic Sensing User Interface Device Methods And Apparatus
App 20120215475 - Rutledge; Austin ; et al. | 2012-08-23 |
Drain Cleaning Apparatus With Electronic Cable Monitoring System
App 20120203501 - Gress; Paul W. ; et al. | 2012-08-09 |
Reconfigurable portable locator employing multiple sensor array having flexible nested orthogonal antennas
Grant 8,203,343 - Olsson , et al. June 19, 2 | 2012-06-19 |
Drain cleaning apparatus with electronic cable monitoring system
Grant 8,176,593 - Gress , et al. May 15, 2 | 2012-05-15 |
Economical Magnetic Locator Apparatus And Method
App 20120062223 - Olsson; Mark S. ; et al. | 2012-03-15 |
Sonde array for use with buried line locators
Grant 8,106,660 - Merewether , et al. January 31, 2 | 2012-01-31 |
Omnidirectional sonde and line locator
Grant 8,035,390 - Olsson , et al. October 11, 2 | 2011-10-11 |
Deep submersible light with pressure compensation
Grant 8,033,677 - Olsson , et al. October 11, 2 | 2011-10-11 |
High-Q self tuning locating transmitter
Grant 8,013,610 - Merewether , et al. September 6, 2 | 2011-09-06 |
Tri-pod buried locator system
Grant 7,990,151 - Olsson , et al. August 2, 2 | 2011-08-02 |
Adaptive multichannel locator system for multiple proximity detection
Grant 7,948,236 - Olsson , et al. May 24, 2 | 2011-05-24 |
Single and Multi-Trace Omnidirectional Sonde and Line Locators and Transmitter Used Therewith
App 20110043211 - Olsson; Mark S. ; et al. | 2011-02-24 |
Omnidirectional Sonde and Line Locator
App 20110037472 - Olsson; Mark S. ; et al. | 2011-02-17 |
Tri-Pod Buried Locator System
App 20110006772 - Olsson; Mark S. ; et al. | 2011-01-13 |
Sondes for locating underground pipes and conduits
Grant 7,863,885 - Olsson , et al. January 4, 2 | 2011-01-04 |
Magnetic Manual User Interface Devices
App 20100265176 - Olsson; Mark S. ; et al. | 2010-10-21 |
Adaptive multichannel locator system for multiple proximity detection
Grant 7,741,848 - Olsson , et al. June 22, 2 | 2010-06-22 |
Multi-sensor mapping omnidirectional sonde and line locators and transmitter used therewith
Grant 7,733,077 - Merewether , et al. June 8, 2 | 2010-06-08 |
Solar Reflector and Drive Control System
App 20100101560 - Olsson; Mark S. ; et al. | 2010-04-29 |
Drain Cleaning Apparatus With Electronic Cable Monitoring System
App 20090292502 - Gress; Paul W. ; et al. | 2009-11-26 |
Single and multi-trace omnidirectional sonde and line locators and transmitter used therewith
Grant 7,619,516 - Olsson , et al. November 17, 2 | 2009-11-17 |
Reconfigurable portable locator employing multiple sensor array having flexible nested orthogonal antennas
Grant 7,518,374 - Olsson , et al. April 14, 2 | 2009-04-14 |
Omnidirectional sonde and line locator
Grant 7,498,816 - Olsson , et al. March 3, 2 | 2009-03-03 |
Multi-sensor mapping omnidirectional sonde and line locator
Grant 7,443,154 - Merewether , et al. October 28, 2 | 2008-10-28 |
Multi-sensor mapping omnidirectional sonde and line locators
Grant 7,336,078 - Merewether , et al. February 26, 2 | 2008-02-26 |
Sondes for locating underground pipes and conduits
Grant 7,298,126 - Olsson , et al. November 20, 2 | 2007-11-20 |
Compact self-tuned electrical resonator for buried object locator applications
Grant 7,276,910 - Prsha , et al. October 2, 2 | 2007-10-02 |
Sondes for locating underground pipes and conduits
Grant 7,221,136 - Olsson , et al. May 22, 2 | 2007-05-22 |
Compact self-tuned electrical resonator for buried object locator applications
App 20070018649 - Prsha; Jeffrey A. ; et al. | 2007-01-25 |
Buried object locating and tracing method and system employing principal components analysis for blind signal detection
Grant 7,136,765 - Maier , et al. November 14, 2 | 2006-11-14 |
Thru-hull light
App 20060239013 - Olsson; Mark S. ; et al. | 2006-10-26 |
Buried object locating and tracing method and system employing principal components analysis for blind signal detection
App 20060178849 - Maier; Christoph H. ; et al. | 2006-08-10 |
Thru-hull light
Grant 7,044,623 - Olsson , et al. May 16, 2 | 2006-05-16 |
Omnidirectional sonde and line locator
Grant 7,009,399 - Olsson , et al. March 7, 2 | 2006-03-07 |
Sondes for locating underground pipes and conduits
App 20060006875 - Olsson; Mark S. ; et al. | 2006-01-12 |
Single and multi-trace omnidirectional sonde and line locators and transmitter used therewith
App 20050156600 - Olsson, Mark S. ; et al. | 2005-07-21 |
Thru-hull light
App 20050111222 - Olsson, Mark S. ; et al. | 2005-05-26 |
Omnidirectional sonde and line locator
App 20040070399 - Olsson, Mark S. ; et al. | 2004-04-15 |
Single and multi-trace omnidirectional sonde and line locators and transmitter used therewith
App 20040070535 - Olsson, Mark S. ; et al. | 2004-04-15 |
Pinwheel transducer array
Grant 6,097,671 - Merewether August 1, 2 | 2000-08-01 |
Broadband acoustic transducer
Grant 5,343,443 - Merewether August 30, 1 | 1994-08-30 |
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