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| US4135072 | 23 Ago 1977 | 16 Ene 1979 | Westinghouse Electric Corp. | Circuit breaker having opening spring position indicator |
| US4152561 | 23 Ago 1977 | 1 May 1979 | Westinghouse Electric Corp. | Circuit breaker motor and handle clutch |
| US4162385 | 30 Sep 1976 | 24 Jul 1979 | Westinghouse Electric Corp. | Dual spring circuit interrupter apparatus |
| US4351994 | 1 Abr 1980 | 28 Sep 1982 | S&C Electric Company | High-voltage switchgear |
| US4587390 | 7 Ene 1985 | 6 May 1986 | Golden Gate Switchboard Co. | Vacuum circuit breaker |
| US5534833 | 11 Oct 1994 | 9 Jul 1996 | General Electric Company | Circuit breaker remote closing operator |
| US8183487 | 20 Jun 2008 | 22 May 2012 | Eaton Corporation | Cam and two-link linkage operating mechanism and circuit interrupter including the same |
