74224271
Nov 22, 1991
Sep 15, 1992
security and burglar alarm systems; namely, central monitoring stations, hardwired or wireless alarm processing units, hardwired security modules, radio receivers, annuciators, annuciator drivers, sensors, digital communicators; energy conservation modules; energy useage modules; and access control systems; namely, access control processors, identity card readers, diagnostic interface modules, and time and attendance software
Electrical and Scientific Apparatus