|
US2093209A
|
|
Generator regulator
|
|
US2055240A
|
|
Rotary transformer for direct electric current
|
|
US2073526A
|
|
Dynamo-electric machine
|
|
US2049389A
|
|
Diesel electric power system
|
|
US2030652A
|
|
Direct electric current transformer device
|
|
US2038380A
|
|
Dynamo-electric direct current generator
|
|
US2049388A
|
|
Electromechanical power plant for locomotive vehicles
|
|
US2074236A
|
|
Dynamo-electric generating apparatus
|
|
US2068867A
|
|
High voltage electrical plant
|
|
US2030762A
|
|
Electrical apparatus for the transmission of angular movements
|
|
US1987417A
|
|
Direct current electric motor equipment operated in connection with rotary direct current transformers
|
|
US1962030A
|
|
Rotary transformer for direct electric currents
|
|
US2055304A
|
|
Control of direct current electric motors
|
|
US2059024A
|
|
Rotary transformer
|
