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| Patents for H02H 11 - Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result (2,416) |
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| 02/01/1977 | US4006386 Monitor and safety device for coil shifting circuit | | 01/25/1977 | US4005344 Protection circuit for battery powered electronic devices | | 12/07/1976 | US3996496 Ground integrity monitor for electrical apparatus | | 11/30/1976 | US3995200 Ground monitor and circuit breaker actuating device | | 11/09/1976 | US3991320 Electric branch-line combiner | | 08/24/1976 | US3976919 Phase sequence detector for three-phase AC power system | | 06/08/1976 | US3962694 Method and apparatus for monitoring an electrically actuated tool | | 06/01/1976 | US3961319 Ground circuit monitor | | 05/18/1976 | US3958164 Protective panel circuit | | 05/11/1976 | US3956639 Ground monitor for electrical apparatus | | 03/30/1976 | US3947728 Network protector relay | | 03/23/1976 | US3946282 Wiring integrity system | | 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 | | 02/24/1976 | US3940785 Semiconductor I.C. with protection against reversed power supply | | 02/10/1976 | US3938006 Active negative sequence cable monitor | | 01/20/1976 | US3934176 Safety apparatus for assuring proper grounding of mining machinery or the like |
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