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PITTSBURGH DES MOINES Co

PITTSBURGH

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2513178A	Bolted flange connection	Expired / Lapsed	1945-02-22	1950-06-27	0	Details
US2472949A	Flexible nozzle for supersonic wind tunnels	Expired / Lapsed	1947-10-31	1949-06-14	0	Details
US2391244A	Heat exchanger	Expired / Lapsed	1942-03-21	1945-12-18	0	Details
US2332227A	Insulated container with heated bottom	Expired / Lapsed	1942-01-31	1943-10-19	0	Details