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COVINGTON MACHINE Co

COVINGTON
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US837364A Coke-leveling machine. Expired / Lapsed 1906-03-29 1906-12-04 0 Details
US803586A Coke-extractor. Expired / Lapsed 1905-04-05 1905-11-07 0 Details