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Hills Maccanna Co

Hills Macc
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3205113A Method of making a valve diaphragm Expired / Lapsed 1962-09-18 1965-09-07 2 Details
US2142970A Mechanical valve Expired / Lapsed 1936-05-11 1939-01-03 0 Details
US663736A Gage-cock. Expired / Lapsed 1900-06-07 1900-12-11 0 Details