Granted Patent
Utility
US 5,031,790 · App. 07/446,647
Vented fuel cap with cam actuated connector
Inventor:
Russell D. Keller
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Dec 6, 1989
Inventor
Russell D. Keller
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.