Granted Patent
Utility
US 4,676,390 · App. 06/888,575
Pressure-release fuel cap
Inventor:
Robert S. Harris
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Jul 22, 1986
Inventor
Robert S. Harris
Assignee (at issue)
Stant Corporation
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.