74172971
Jun 3, 1991
Nov 10, 1992
transformers; namely, rectifier transformers, control transformers, isolation transformers, transistor transformers, coupling transformers, hybrid transformers, encapsulated transformers; filter chokes; auto transformers; inductors and coils, encapsulated and not encapsulated; namely, coils for noise absorption, degaussing, power regulators and filters; converters; variable voltage transformers; power contactors and solenoids; power supplies; and line conditioners
Electrical and Scientific Apparatus