75051824
Feb 1, 1996
use with or within a security system, parts and fittings including - signal transmitters, signal receivers; circuits adapted for sue therewith or therein; registered data programs, telecommunication equipment for sending information carrying signals over the main voltage network, contact means, data equipment
Electrical and Scientific Apparatuscommunication services, namely communication over the main voltage network, communication by high frequency, telecommunication
Telecommunications