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HYMAN HURVITZ

HYMAN HURV
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3360613A Editing system utilizing recirculation means Expired / Lapsed 1963-07-16 1967-12-26 2 Details
US3323230A Language teacher Expired / Lapsed 1964-07-09 1967-06-06 2 Details
US3234666A Teaching machine Expired / Lapsed 1963-10-21 1966-02-15 2 Details