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American Iron & Machine Works

American I
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2992021A Pipe connection Expired / Lapsed 1958-02-26 1961-07-11 0 Details
US1822628A Weight indicator Expired / Lapsed 1924-07-31 1931-09-08 0 Details
US1660714A Rotary drilling apparatus Expired / Lapsed 1926-08-05 1928-02-28 0 Details