73802998
May 25, 1989
Apr 9, 1991
OVERVOLTAGE AND CURRENT PROTECTORS FOR ELECTRICAL AND ELECTRONIC TELECOMMUNICATION PLANTS AND DATA TELECOMMUNICATION SYSTEMS; FITTINGS, NAMELY SURGE ARRESTORS, FUSES, MELTING FUSES, DIODES, VARISTORS, AND THERMOPROTECTIVE CIRCUIT BREAKERS
Electrical and Scientific Apparatus