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United Airlines Inc

United Air
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2748371A Signal light Expired / Lapsed 1953-07-06 1956-05-29 0 Details
US2492605A Hydraulically expansible hollow rivet Expired / Lapsed 1941-11-10 1949-12-27 0 Details
US2362958A Radio receiver system Expired / Lapsed 1942-06-22 1944-11-14 0 Details