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INSTR FOR INDUSTRY Inc

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Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3333410A Electronic clock-calendar Expired / Lapsed 1965-04-02 1967-08-01 2 Details
US2900634A Duplex operation using alternately keyed distributed amplif… Expired / Lapsed 1957-10-09 1959-08-18 0 Details