73171593
May 23, 1978
May 12, 1981
Electric Distribution and Control Systems for Buildings-Namely, Conduits, Raceways, Signals, Alarms, Trunk Lines, Sockets, Commutation Interrupters, Photo Electric Cells
Electrical and Scientific ApparatusInstallation of Electric Distribution and Control Systems for Buildings to the Order and Specifications of Others
Building Construction and Repair