Granted Patent
Utility
US 5,797,427 · App. 08/728,752
Fuel injector check valve
Inventor:
Alfred J. Buescher
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Oct 11, 1996
Inventor
Alfred J. Buescher
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.