U.S. federal trademark · Serial No. 73621914
MACHINES, APPARATUS FOR PREPARING AND MANUFACTURING OF METALS, DEPOSITING OF METALS AND ALLOYS BY CHEMICAL VACUUM VAPORIZATION
CHEMICAL PRODUCTS USED IN INDUSTRY, CHEMICAL PRODUCTS FOR IMPROVING THE ALLOYING OF METALS, PRODUCTS FOR HARDENING METALS
COMMON METALS AND THEIR ALLOYS, COMMON METALS AND ALLOYS DEPOSITED BY CHEMICAL VACUUM VAPORIZATION
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