|
GB621577A
|
|
Improvements in geared motor units
|
|
GB602497A
|
|
Electromechanical device operating simultaneously as clutch, reverse gear and change-speed gear
|
|
GB600791A
|
|
Improvements in reversing and change speed-gears particularly designed for ships
|
|
GB600790A
|
|
Improvements relating to combined reversing and change-speed gearing
|
|
GB602803A
|
|
Electro-mechanical change-speed gear
|
|
GB598968A
|
|
Improvements in or relating to electromagnetic clutches and brakes
|
|
GB591091A
|
|
Improvements in or relating to electro-magnetic clutches and brakes
|
|
US2560868A
|
|
Electromagnetic clutch and brake
|
|
CA459155A
|
|
Electro-magnetic clutch and brake
|
