REBUILT ELECTRIC MOTORS AND GENERATORS, CONTROL UNITS FOR ELECTRIC MOTORS AND GENERATORS, ELECTRIC HEAT CONTROLS FOR EXTRUDERS AND THE LIKE, WIRE PREHEATERS AND ANNEALERS, D.C. ELECTRIC MOTOR VARIABLE SPEED REACTOR DRIVES, ELECTRONIC FILM TREATER FOR TREATING PLASTIC, CELLOPHANE, PAPER, PAPERBOARD, AND OTHER SUBSTRATES SO THAT SAID MATERIALS MAY BE PRINTED UPON