Granted Patent
Utility
US 4,577,598 · App. 06/696,674
Internal combustion engine and cam drive mechanism therefor
Inventor:
Thomas T. Ma
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Jan 30, 1985
Inventor
Thomas T. Ma
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.