U.S. federal trademark · Serial No. 72191960 · Reg. No. 0795836
CHEMICAL COMPOSITION FOR USE IN PREPARING BATHS FOR CHEMICALLY PRODUCING TARNISH-RESISTANT, LUSTROUS, AND SURFACE COLOR CHANGE REACTION COATINGS ON FERROUS METALS, COPPER AND ITS ALLOYS AS BRASS, AND SUCH METAL PLATED SURFACES
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