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CAMPBELL ELECTRIC Co

CAMPBELL E
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1631718A Cabinet Expired / Lapsed 1920-06-14 1927-06-07 0 Details
US1012326A Electrotherapeutic apparatus. Expired / Lapsed 1909-11-10 1911-12-19 0 Details