ELECTRIC CAR COUPLERS, TROLLEY POLE CATCHERS AND RETRIEVERS, TROLLEY POLE BASES, CURRENT COLLECTORS, TROLLEY WIRE HANGERS, SECTION INSULATORS, STRAIN CLAMPS, STRAIN INSULATORS, INSULATED BOLTS, TROLEY WIRE EARS AND CLAMPS, SPLICERS FOR ELECTRIC CONDUCTORS, TROLLEY FROGS AND CROSS-OVERS, EXPANSION SUPPORTS FOR TROLLEY WIRE HANGERS, TROLLEY WIRE GUARDS, ELECTRIC RAIL BONDS, MOLDABLE PLASTICS FOR ELECTRIC INSULATORS, FEEDER LINE SWITCHES, HANGERS FOR CATENARY SYSTEMS, POT HEADS, APPROACH TIPS FOR TROLLEY FROGS AND CROSS-OVERS AND SECTION INSULATORS, ELECTRIC ARC WELDING MACHINES, CONNECTORS AND DEAD ENDING DEVICES FOR MESSENGER CABLES, TROLLEY WIRE LUBRICATORS, CURVE SEGMENTS AND SPACERS FOR TROLLEY WIRE SYSTEMS, ELECTRIC INSULATORS AND SUPPORTS OF VITREOUS MATERIAL AND METAL FITTINGS USED THEREWITH, THIRD RAIL INSULATORS, STRAIN INSULATORS OF PORCELAIN, SUSPENSION TYPE INSULATORS, WALL AND ENTRANCE INSULATORS AND TUBES AND BUSHINGS, SUSPENSION AND STRAIN CLAMPS, PILLAR AND POST INSULATORS, BUS BAR INSULATORS AND CLAMPS, TRANSFORMER BUSHINGS, ELECTRIC CONDENSERS OF PORCELAIN, POST LINE INSULATORS, ARC CONTROL GAPS, COUPLING CONDENSERS, PHASE SHIFTERS, SINGLE POLE SWITCH CIRCUIT BREAKERS, DOUBLE POLE JUNCTION BOXES, SAFETY FEEDER SWITCHES, MOTOR CONTROLLERS FOR STARTING, STOPPING AND REVERSING ELECTRIC MOTORS, DISTRIBUTION BOXES FOR ELECTRIC CIRCUITS