Granted Patent
Utility
US 6,053,138 · App. 09/213,758
Device for hydraulic rotational angle adjustment of a shaft relative to a drive wheel
Inventors:
Alfred Trzmiel, Wolfgang Stephan, Axel-Willi Jochim
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Dec 17, 1998
Inventors
Alfred Trzmiel
Wolfgang Stephan
Axel-Willi Jochim
Assignees (at issue)
Hydraulik-Ring GmbH
Dr. Ing. h.c. F. Porsche Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.