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ELECTRIC HEATING APPARATUS Co

ELECTRIC H
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1547623A Electric furnace Expired / Lapsed 1922-08-11 1925-07-28 0 Details
US1447517A Automatic temperature-control means for electric furnaces Expired / Lapsed 1920-08-06 1923-03-06 0 Details