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United Airlines Inc

United Air

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2865100A	Deburring tool	Expired / Lapsed	1956-02-08	1958-12-23	0	Details
US2748371A	Signal light	Expired / Lapsed	1953-07-06	1956-05-29	0	Details
US2543973A	Plural-frequency coupling unit	Expired / Lapsed	1946-06-27	1951-03-06	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