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Century Geophysical Corp

Century Ge
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3610934A Automatic focusing system utilizing means for alternately d… Expired / Lapsed 1969-08-22 1971-10-05 9 Details
US3031634A Strain gauge Expired / Lapsed 1960-04-04 1962-04-24 2 Details
US2822779A Developer for electrostatic photography Expired / Lapsed 1956-09-24 1958-02-11 0 Details