73104934
Nov 1, 1976
Jun 24, 1980
ROTARY OR STATIC ELECTRIC GENERATORS AND PARTS THEREFOR; AUTOMATIC MACHINES FOR SURFACE HARDENING, ANNEALING OR WELDING
MachineryTRANSFORMERS, CAPACITORS, CHOKE COILS AND INDUCTORS: ELECTRIC WELDING SETS; CONTROLS, PARTS AND ACCESSORIES FOR ELECTRIC WELDING SETS AND FOR HEAT TREATMENT EQUIPMENT-NAMELY, VOLTMETERS, AMMETERS, POWER FACTOR METERS, AND HIGH FREQUENCY METRS
Electrical and Scientific ApparatusINDUCTION HEATING EQUIPMENT-NAMELY, INDUCTION FURNACES, HEATERS FOR BARS AND TUBES, BILLET HEATERS, PIN HEATERS; DI-ELECTRIC HEATING UNITS; RESISTANCE FURNACES AND MELTING FURNACES; ELECTRIC UNITS FOR HEATING BY ELECTRIC DISCHARGE OR BY RADIATION, AND PARTS THEREFOR
Environmental Control Apparatus