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Aetna Standard Engineering Co

Aetna Stan

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2810424A	Method and apparatus for making reinforced plastic tubing	Expired / Lapsed	1953-03-20	1957-10-22	0	Details
US2310162A	Apparatus for galvanizing	Expired / Lapsed	1939-11-25	1943-02-02	0	Details
US2294138A	Die holding apparatus	Expired / Lapsed	1941-07-16	1942-08-25	0	Details
US2190371A	Shaft mounting for rolls or the like	Expired / Lapsed	1938-03-01	1940-02-13	0	Details
US2109921A	Method and machine for slitting metal	Expired / Lapsed	1936-01-18	1938-03-01	0	Details