Granted Patent
Utility
US 4,561,391 · App. 06/719,942
Four valve for cylinder engine with single overhead camshaft
Inventor:
Aladar O. Simko
Patented Case
View Patent ↗
Granted: Dec 31, 1985
Filed: Apr 4, 1985
Inventor
Aladar O. Simko
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.