|
US1280147A
|
|
Combined motor starting and releasing mechanism for alternating-current motors.
|
|
US1191273A
|
|
Automatic resistance-controller.
|
|
US1201016A
|
|
System of constant-speed motor control.
|
|
US1220721A
|
|
Automatic release mechanism.
|
|
US1151241A
|
|
Magnetic short-circuiting switch.
|
|
US1148656A
|
|
Short-circuiting and retrieving apparatus for rheostats.
|
|
US1066580A
|
|
Speed-regulator for electric motors.
|
|
US1120018A
|
|
Electric-current-controlling device.
|
|
US1071138A
|
|
Current-controlling device.
|
|
US1161021A
|
|
Automatic starter for electric motors.
|
|
CA104958A
|
|
Rheostat
|
|
GB190307561A
|
|
Improvements in Electric Current Controllers.
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