Granted Patent
Utility
US 5,613,469 · App. 08/578,130
Controls apparatus for engine variable valve system
Inventor:
Ronald Michael Rygiel
Patented Case
View Patent ↗
Granted: Mar 25, 1997
Filed: Dec 26, 1995
Inventor
Ronald Michael Rygiel
Assignee (at issue)
Chrysler Group LLC
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.