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Hughes Tool Co

Hughes Too
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2727759A Valved couplers for fluid-conducting conduits Expired / Lapsed 1951-10-27 1955-12-20 0 Details
US2293997A Method of making tool joints Expired / Lapsed 1939-08-01 1942-08-25 0 Details