72216987
Apr 20, 1965
Sep 26, 1967
WEST COAST ALLOYS CO. INC.
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METAL CASTINGS FORMED OF ABRASION RESISTANT FERROUS ALLOYS OF HIGH CHROMIUM CONTENT
WELDING ELECTRODES OF ABRASION RESISTANT FERROUS ALLOYS OF HIGH CHROMIUM CONTENT FOR THE CONSTRUCTION, MINING AND SMELTING TRADES