73140835
Sep 12, 1977
Dec 9, 1980
Light Dimmers; Lighting Controls in the Form of Switches, Panels and Pushbutton Modules; and Light Dimming Systems Comprising Manual and/or Motorized Lighting Controls, Circuit Breakers, Lamp Debuzzing Coil, Power Section Units, Motor Drive Units and Control Switches Therefor, and Printed Circuit Boards
Electrical and Scientific Apparatus