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Mast Development Co

Mast Devel
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2998188A Universal counter Expired / Lapsed 1957-02-18 1961-08-29 0 Details
US2858985A Predetermined counter with magnetic reset to preset position Expired / Lapsed 1956-12-27 1958-11-04 0 Details