Granted Patent
Utility
US 5,954,312 · App. 08/594,538
Groove means in a fuel injector valve seat
Inventor:
Daniel E. Earnhardt
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: Jan 31, 1996
Inventor
Daniel E. Earnhardt
Assignee (at issue)
Siemens Automotive 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.