Granted Patent
Utility
US 6,386,162 · App. 09/779,066
Variable valve drive for load control of a positive ignition internal combustion engine
Inventor:
Frank Himsel
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Feb 8, 2001
Inventor
Frank Himsel
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.