71580621
Jun 16, 1949
Apr 10, 1951
TIMING APPARATUS, CONSISTING OF ELECTRIC DISCHARGE TUBES, CAPACITORS,RESISTORS, TRANSFORMERS, SWITCHES, AND OTHER COOPERATING ELECTRICAL PARTS ALL ASSOCIATED INTO A SINGLE OPERATIVE UNIT AND INTENDED FOR USE WITH ELECTRIC WELDING MACHINES, TO DETERMINE AND CONTROL THE OPERATING STEPS THEREOF
Housewares and Glass