73151564
Dec 8, 1977
Sep 22, 1981
Electrical Machines and Motors-Namely, Electrical Motors, Electrical Motor-Generators, Electrical Motor-Alternators and Electrical Inductor-Alternators
MachineryElectrical Apparatus and Instruments-Namely, Voltage Regulators, Frequency Converters, Electrical Motor Controllers, Motor Tachometers, Resolvers, Resolver Amplifiers; Servo Motors, Stepper Motors and Synchros
Electrical and Scientific Apparatus