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Dr Ing HCF Porsche AG

Dr Ing HCF

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
EP0090944A2	Differential gearing	Expired / Lapsed	1983-02-26	—	0	Details
US4644823A	Differential gear	Expired / Lapsed	1983-03-31	1987-02-24	25	Details
US2922316A	Steering column for motor vehicles	Expired / Lapsed	1956-11-05	1960-01-26	0	Details
US2234591A	Self-locking differential mechanism	Expired / Lapsed	1938-12-28	1941-03-11	0	Details
US377160A	Tag hook or needle	Expired / Lapsed	—	1888-01-31	0	Details