Granted Patent
Utility
US 5,174,892 · App. 07/348,421
Permanent fuel filter
Inventor:
Leland L. Davis
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: May 8, 1989
Inventor
Leland L. Davis
Assignee (at issue)
Daco Manufacturing 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.