Granted Patent
Utility
US 5,638,786 · App. 08/698,703
Self-cleaning air filter for a fuel vapor recovery system
Inventor:
David R. Gimby
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Aug 16, 1996
Inventor
David R. Gimby
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.