Granted Patent
Utility
US 5,040,508 · App. 07/434,950
Throttle valve actuator
Inventor:
Shunso F. Watanabe
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: Nov 9, 1989
Inventor
Shunso F. Watanabe
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.