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Gutehoffnungshutte Oberhausen AG

Gutehoffnu

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
GB292552A	Controlling gear for centrifugal compressors	Expired / Lapsed	1928-05-01	—	0	Details
DE709266C	Centrifugal compressor	Expired / Lapsed	1936-09-15	1941-08-12	0	Details
DE685222C	Door with a sealing insert for closing off air raid shelters	Expired / Lapsed	1934-10-23	1939-12-14	0	Details
US2102160A	Process for the production of formaldehyde from methane	Expired / Lapsed	1934-03-15	1937-12-14	0	Details