| Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031) |
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| 03/16/1976 | US3944891 Circuit for verifying correct connections to a three-wire dual voltage power distribution system and the absence of open circuit conditions therein |
| 03/16/1976 | US3944890 Static overcurrent relay |
| 03/16/1976 | US3944889 Short-circuit protection circuit |
| 03/16/1976 | US3944888 Selective tripping of two-pole ground fault interrupter |
| 03/16/1976 | US3944885 Electric load restriction unit |
| 03/16/1976 | US3944846 Subsynchronous relay |
| 03/09/1976 | US3943411 Overload protection and display circuit, particularly for sound radiators |
| 03/09/1976 | US3943410 Light assembly for use in a conduit |
| 03/09/1976 | US3943409 Monitor assembly for ground fault interrupter |
| 03/02/1976 | US3942104 Cell balance detector for electrolytic cell assemblies |
| 02/24/1976 | US3940664 Multi-phase voltage sensing switching device |
| 02/24/1976 | US3940663 Drive circuit for a main contactor |
| 02/17/1976 | USRE28716 Apparatus for detecting a ground connection on load side of neutral conductor |
| 02/10/1976 | US3938008 Common bus driver complementary protect circuit |
| 02/10/1976 | US3938007 Electrical network protection device with automatic switch over between protection criteria |
| 02/10/1976 | US3938006 Active negative sequence cable monitor |
| 02/10/1976 | US3938005 Electrical generating system overvoltage protection circuit |
| 02/10/1976 | US3937937 Primary power fault detector |
| 02/03/1976 | US3936702 Electrical protection means |
| 02/03/1976 | US3936701 Timing circuit for electronic undervoltage detecting device and latch |
| 02/03/1976 | US3936699 Ground fault protective circuitry |
| 01/27/1976 | US3935515 Current auxiliary relay for circuit breaker |
| 01/27/1976 | US3935513 Protective circuit for transistor amplifier |
| 01/27/1976 | US3935512 Circuit for the compensation of current interference signals |
| 01/27/1976 | US3935510 Ground fault protective system including an impedance responsive oscillator |
| 01/20/1976 | US3934239 Adjustable electronic load-alarm relay |
| 01/13/1976 | US3932791 Multi-range, high-speed A.C. over-current protection means including a static switch |
| 01/13/1976 | US3932790 Ground fault interrupter with reversed line polarity lamp indicator |
| 01/13/1976 | US3932789 Current sensing protector system for A. C. motors |
| 01/06/1976 | US3931577 Radio receiver protection arrangement |
| 01/06/1976 | US3931547 Protection circuit |