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Patent

US1396919 Automatic operation of electrolytic cells

Cited prior art · Porter H Brace · Westinghouse Electric Corp · United States · 1921

Page 1 Drawing sheet — no readable text. Page 2 UNITED STATES PATENT office. PORTER. H. BRACE, OF PITTSBURGH, PENNsy Liv ANIA, AssIGNOR. To westriNg HOUSE, ELECTRIC st MANUFACTURING COMPANY,