71370287
Oct 12, 1935
Jul 21, 1936
ABRASIVE BLAST APPARATUS SUCH AS MILLS, CABINETS, CONTAINERS AND CONVEYORS USED IN CLEANING, ABRADING AND/OR TREATING METALLIC CASTINGS, FORGINGS, STAMPINGS, BARS, BILLETS, SHEETS AND LIKE ARTICLES BY MEANS OF AN ABRASIVE BLAST
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