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MARCHANT CALCULATORS Inc

MARCHANT C
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2771551A Counting circuits Expired / Lapsed 1953-03-09 1956-11-20 0 Details
US2771599A Readout mechanism Expired / Lapsed 1953-03-06 1956-11-20 0 Details
US2666911A Changeable exhibitor Expired / Lapsed 1948-01-12 1954-01-19 0 Details