Heinrich Kopp AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6749451 Electrical plug-in adapter for optional connection to different national plug-in systemsExpiredMay 07, 02Jun 15, 04[H01R]
6154115 Overcurrent release deviceExpiredJun 08, 99Nov 28, 00[H01H]
6094329 DI protective switching deviceExpiredOct 07, 99Jul 25, 00[H02H]
6091591 Di protective switching deviceExpiredMay 07, 97Jul 18, 00[H02H]
6046419 Switch with sequentially operated contractsExpiredFeb 17, 99Apr 04, 00[H01H]
5917687 Fault-current protector meansExpiredDec 11, 97Jun 29, 99[H02H]
5684280 Device for switching an electric motor, particularly for braking an electrically operted toolExpiredNov 29, 95Nov 04, 97[H01H]
5565828 Circuit breakerExpiredFeb 27, 95Oct 15, 96[H01H]
5502285 Contact-separating device for circuit breakersExpiredJul 25, 94Mar 26, 96[H01H]
5499007 Circuit breakerExpiredApr 18, 94Mar 12, 96[H01H]
5347248 Protective switching device for difference-current and undervoltage trippingExpiredOct 15, 92Sep 13, 94[H01H]

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