Granted Patent
Utility
US 5,255,641 · App. 07/993,746
Variable engine valve control system
Inventor:
Michael M. Schechter
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Dec 21, 1992
Inventor
Michael M. Schechter
Assignee (at issue)
Ford Motor Company
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.