73153085
Dec 22, 1977
Jun 5, 1979
METAL ALLOYS FOR WELDING PURPOSES: RESISTANCE WELDING ALLOYS, FORGINGS, CASTINGS, AND BAR STOCK
Metal GoodsRESISTANCE WELDING ELECTRODES, TIPS, SHANKS, HOLDERS, ADAPTERS, CAPS, REFRACTORY METAL FACED TIPS, TIP EXTRACTORS FOR REMOVING THE WELDING TIPS FROM THE HOLDERS AFTER THEY HAVE BEEN USED UP IN WELDING, COUPLINGS, AND ARMS
Electrical and Scientific Apparatus