73313452
Jun 5, 1981
Feb 8, 1983
[ Burglar and Fire Alarms; Public Address Systems Comprising Amplifiers, Speakers, Microphones, Wiring, and Receivers; ] [ Electronic Components-Namely, Induction Filters, Amplifiers, Combiners, Splitters, Transformers, Toroids, Coils, ] Attenuators, [ Delay Lines, Lighting Controls, Printed Circuit Boards, Modular Printed Circuit Boards, Band Pass Filters, RF Mixers, Chokes, and Coil Attenuators; Communications Transmitters ]
Electrical and Scientific Apparatus