Patent | Date |
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Power supply having voltage blocking clamp Grant 7,339,805 - Hemminger , et al. March 4, 2 | 2008-03-04 |
Method and apparatus for electronic meter testing Grant 7,239,125 - Hemminger , et al. July 3, 2 | 2007-07-03 |
Power supply having voltage blocking clamp App 20070115022 - Hemminger; Rodney C. ;   et al. | 2007-05-24 |
Method and apparatus for electronic meter testing App 20050270015 - Hemminger, Rodney C. ;   et al. | 2005-12-08 |
Method and apparatus for electronic meter testing Grant 6,954,061 - Hemminger , et al. October 11, 2 | 2005-10-11 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages Grant 6,940,268 - Hemminger , et al. September 6, 2 | 2005-09-06 |
Method for providing optical test signals for electronic meter testing Grant 6,762,598 - Hemminger , et al. July 13, 2 | 2004-07-13 |
Method and apparatus for electronic meter testing Grant 6,703,823 - Hemminger , et al. March 9, 2 | 2004-03-09 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages App 20040021456 - Hemminger, Rodney C. ;   et al. | 2004-02-05 |
Method and apparatus for electronic meter testing App 20040008019 - Hemminger, Rodney C. ;   et al. | 2004-01-15 |
Energy meter having programmable functions Grant 6,577,961 - Hubbard , et al. June 10, 2 | 2003-06-10 |
Energy meter with power quality monitoring systems and methods Grant 6,507,794 - Hubbard , et al. January 14, 2 | 2003-01-14 |
Apparatus for metering electrical power and electronically communicating electrical power information Grant 6,504,357 - Hemminger , et al. January 7, 2 | 2003-01-07 |
Apparatus for metering electrical power that determines energy usage data based on downloaded information Grant 6,483,290 - Hemminger , et al. November 19, 2 | 2002-11-19 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages App 20020071296 - Hemminger, Rodney C. ;   et al. | 2002-06-13 |
Energy meter with instrumentation systems and methods Grant 6,374,188 - Hubbard , et al. April 16, 2 | 2002-04-16 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages App 20010015640 - Hemminger, Rodney C. ;   et al. | 2001-08-23 |
System and method for detecting flicker in an electrical energy supply Grant 6,269,316 - Hubbard , et al. July 31, 2 | 2001-07-31 |
Apparatus for metering at least one type of electrical power over a predetermined range of service voltages Grant 6,229,295 - Hemminger , et al. May 8, 2 | 2001-05-08 |
Electrical energy meter for 3-wire delta service Grant 6,097,182 - Hemminger , et al. August 1, 2 | 2000-08-01 |
System and method for automatically determining the electrical energy service type to which an energy meter is connected Grant 6,094,622 - Hubbard , et al. July 25, 2 | 2000-07-25 |
Electrical energy meter with snap fit interlocking parts Grant 5,966,010 - Loy , et al. October 12, 1 | 1999-10-12 |
Apparatus and method to detect tampering with an electronic utility meter Grant 5,940,009 - Loy , et al. August 17, 1 | 1999-08-17 |
Universal electronic energy meter for use with 4-wire standard services Grant 5,903,145 - Hemminger , et al. May 11, 1 | 1999-05-11 |
Programmable electrical energy meter and methods therefor Grant 5,631,843 - Munday , et al. May 20, 1 | 1997-05-20 |
Switching power supply for use in an electronic energy meter having a wide range of input voltages Grant 5,621,629 - Hemminger , et al. April 15, 1 | 1997-04-15 |
Programmable electrical energy meter and methods therefor Grant 5,555,508 - Munday , et al. September 10, 1 | 1996-09-10 |
Programmable electrical energy meter utilizing a non-volatile memory Grant 5,548,527 - Hemminger , et al. August 20, 1 | 1996-08-20 |
Programmable electrical energy meter using multiplexed analog-to-digital converters Grant 5,544,089 - Hemminger , et al. August 6, 1 | 1996-08-06 |
Method and apparatus for electronic meter testing Grant 5,537,029 - Hemminger , et al. July 16, 1 | 1996-07-16 |
Method of determining power measurements in an electrical energy meter Grant 5,537,333 - Hemminger , et al. July 16, 1 | 1996-07-16 |
Switching power supply having voltage blocking clamp Grant 5,457,621 - Munday , et al. October 10, 1 | 1995-10-10 |
Electric utility meter with electronic register Grant 4,977,368 - Munday , et al. December 11, 1 | 1990-12-11 |
Time-of-use-meter with a calendar of cyclic events Grant 4,852,030 - Munday July 25, 1 | 1989-07-25 |
Time-of-use watt-hour meter with demand profile capability Grant 4,654,588 - Munday March 31, 1 | 1987-03-31 |
Electronic display apparatus using time multiplexed data and control signals Grant 4,462,026 - Munday July 24, 1 | 1984-07-24 |