73386890
Sep 20, 1982
Mar 19, 1985
Electric Motors, Adjustable Couplings, Drives, Transmissions in the Nature of Speed and Power Increasers and Reducers for Uses Other than Land Vehicles
MachineryStepping Motors and Servo Actuators in the Nature of Electromechanical Stepping Devices for Positioning in Response to Electrical Control Pulses
Electrical and Scientific Apparatus