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JOSEPH F KELLER

JOSEPH F K
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2319374A Balanced pump and motor Expired / Lapsed 1939-06-28 1943-05-18 0 Details
US2236980A Liquid pump or motor Expired / Lapsed 1937-12-02 1941-04-01 0 Details