Granted Patent
Utility
US 4,615,306 · App. 06/810,535
Engine valve timing control system
Inventor:
Russell J. Wakeman
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Dec 17, 1985
Inventor
Russell J. Wakeman
Assignee (at issue)
ALLIED CONSULTING, INC.
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.