loadpatents
Patent applications and USPTO patent grants for Felsen; Karl H..The latest application filed is for "air diffuser apparatus".
Patent | Date |
---|---|
Air diffuser apparatus Grant 5,807,171 - Felsen September 15, 1 | 1998-09-15 |
Connection means for suspended ceiling grid Grant 5,137,390 - Felsen August 11, 1 | 1992-08-11 |
Manual or automatic drainage device for downspouts Grant 4,135,540 - Felsen January 23, 1 | 1979-01-23 |
Independent jacking system for vehicles and the like Grant 3,888,464 - Felsen June 10, 1 | 1975-06-10 |
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