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Hart & Hegeman Manufacturing Co

Hart & Heg
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1121293A Magnetic lamp-support. Expired / Lapsed 1912-07-12 1914-12-15 0 Details
US1058051A Electric switch. Expired / Lapsed 1912-06-20 1913-04-08 0 Details