|
US2060758A
|
|
Circuit breaker
|
|
US1980471A
|
|
Circuit interrupter
|
|
US2038507A
|
|
Electric arc extinguishing medium
|
|
US1915951A
|
|
Switch operating mechanism
|
|
US1895770A
|
|
Switch operating mechanism
|
|
US1912176A
|
|
Electric switch
|
|
US1910494A
|
|
Thermal relay
|
|
US1996423A
|
|
Oil insulated electrical apparatus
|
|
US1899693A
|
|
Suspension potential transformer
|
|
US1895817A
|
|
Electric switch
|
|
US1845514A
|
|
Electric switch having lockout mechanism
|
|
US1868605A
|
|
Potential transformer
|
|
US1868606A
|
|
Combined insulating bushing and transformer
|
|
US1827935A
|
|
Insulating bushing
|
|
US1827936A
|
|
Combined insulating bushing and transformer
|
|
US1885365A
|
|
Inclosed electric switch
|
|
US1919466A
|
|
Electric distribution system
|
|
US1886346A
|
|
Electric switch and supporting mechanism therefor
|
|
US1912342A
|
|
Electric switch and arc extinguishing means
|
|
US1879969A
|
|
Electric generating and distributing system
|
