Granted Patent
Utility
US 6,363,897 · App. 09/747,076
Device for changing the control timing of the gas exchange valves of an internal combustion engine, in particular a hydraulic camshaft adjustment device of the rotary piston type
Inventors:
Martin Scheidt, Jens Schafer, Matthias Kapp, Martin Steigerwald
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Dec 22, 2000
Inventors
Martin Scheidt
Jens Schafer
Matthias Kapp
Martin Steigerwald
Assignee (at issue)
INA Wälzlager Schaeffler oHG
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.