74734633
Sep 26, 1995
Apr 15, 1997
components for use in a home power line control system, namely, signal transmitters, button input keypads, desktop controllers, programmable controllers, annunciator panels, dimmer control devices, mounts for dimmer controls, light fixture modules, receptacles, master switches, slave switches, signal strength indicators, electronic filters, signal test transmitters, coupling devices and repeaters
Electrical and Scientific Apparatus