Granted Patent
Utility
US 4,771,741 · App. 07/034,362
Non-rotative roller tappet arrangement for internal combustion engines
Inventor:
Marc Leer
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Apr 6, 1987
Inventor
Marc Leer
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.