| Patent | Date |
|---|
High reliability instrument system
Grant 5,777,550 - Maltby , et al. July 7, 1 | 1998-07-07 |
Coating responsive material condition monitoring system
Grant 5,539,670 - Maltby , et al. July 23, 1 | 1996-07-23 |
Error compensating instrument system with digital communications
Grant 5,510,779 - Maltby , et al. April 23, 1 | 1996-04-23 |
Continuous condition sensing system determining liquid level by admittance measurement
Grant 5,045,797 - Kramer , et al. * September 3, 1 | 1991-09-03 |
Continuous condition sensing system
Grant 4,950,998 - Kramer , et al. August 21, 1 | 1990-08-21 |
Multiple set point condition monitoring systems
Grant 4,799,174 - Kramer , et al. January 17, 1 | 1989-01-17 |
Probe system for measuring the condition of materials
Grant 4,757,252 - Maltby , et al. July 12, 1 | 1988-07-12 |
RF Admittance apparatus and method for monitoring the contents of a pipe
Grant 4,568,874 - Kramer , et al. February 4, 1 | 1986-02-04 |
Two layer probe
Grant 4,511,948 - Maltby , et al. April 16, 1 | 1985-04-16 |
Two layer probe
Grant 4,428,026 - Maltby , et al. January 24, 1 | 1984-01-24 |
Method of making an RF admittance measuring probe and product thereof
Grant 4,332,167 - Sun , et al. June 1, 1 | 1982-06-01 |
Method of using capacitor probe with a semiconductive electrode
Grant 4,301,681 - Maltby , et al. November 24, 1 | 1981-11-24 |
System and method for obtaining compensated level measurements
Grant 4,235,106 - Maltby , et al. November 25, 1 | 1980-11-25 |
Admittance sensing probe having multiple sensing elements
Grant 4,208,909 - Maltby , et al. June 24, 1 | 1980-06-24 |
RF Admittance measuring method and apparatus for determining the level of a conductive liquid
Grant 4,166,388 - Sun , et al. September 4, 1 | 1979-09-04 |
Admittance measuring system for monitoring the condition of materials
Grant 4,146,834 - Maltby , et al. March 27, 1 | 1979-03-27 |
RF admittance measuring method and apparatus for determining the level of a conductive liquid
Grant 4,064,753 - Sun , et al. December 27, 1 | 1977-12-27 |
Admittance measuring system for monitoring the condition of materials
Grant 3,993,947 - Maltby , et al. November 23, 1 | 1976-11-23 |
Method of and apparatus for measuring the amount of coating material applied to substrates
Grant 3,936,738 - Maltby February 3, 1 | 1976-02-03 |
System for measuring fluid levels in a vehicle transmission
Grant 3,918,306 - Maltby November 11, 1 | 1975-11-11 |
Probe responsive to conditions of material
Grant 3,879,644 - Maltby April 22, 1 | 1975-04-22 |
Continuous Condition Measuring System
Grant 3,781,672 - Maltby , et al. December 25, 1 | 1973-12-25 |
Susceptance Measuring System For Indicating Condition Of A Material
Grant 3,778,705 - Maltby December 11, 1 | 1973-12-11 |
Measuring Characteristics Of Materials By Using Susceptive And Conductive Components Of Admittance
Grant 3,746,975 - Maltby July 17, 1 | 1973-07-17 |
Rf System For Measuring The Level Of Materials
Grant 3,706,980 - Maltby December 19, 1 | 1972-12-19 |
Capacitance-type Monitoring Apparatus
Grant 3,665,301 - Maltby May 23, 1 | 1972-05-23 |
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