72187163
Feb 20, 1964
Aug 2, 1966
ALL LIGHT METALS, ALL HEAVY METALS, METAL ALLOYS, AND MIXTURES OF METALS AND METAL ALLOYS WITH OXYGEN CONTAINING COMPOUNDS
JewelryHEATING AND WELDING COMPOUNDS FOR METALS, METALLOIDS, CRUCIBLES AND POTS FOR CASTING AND SMELTING, CRUCIBLE LININGS, MOUNTING AND CLAMPING APPARATUS FOR WELDING OPERATIONS, MOLDS AND DEVICES FOR EFFECTING ALUMINOTHERMIC WELDING OPERATIONS, PREHEATERS, AND VAPORIZERS
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