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CASE RES LAB Inc

CASE RES L
Active Patents
0
Total Holdings
4

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1970223A Sound recording glow lamp Expired / Lapsed 1929-06-28 1934-08-14 0 Details
US1872675A Cell and method of making the same Expired / Lapsed 1928-05-07 1932-08-23 0 Details
US1724872A Photo-active thermoelectric device Expired / Lapsed 1924-12-22 1929-08-13 0 Details
US1584728A Method of manufacturing mirrors Expired / Lapsed 1922-04-18 1926-05-18 0 Details