Granted Patent
Utility
US 6,082,321 · App. 09/124,612
Method for controlling output pressure of an engine oil pump
Inventor:
Mark Kopec
Patented Case
View Patent ↗
Granted: Jul 4, 2000
Filed: Jul 29, 1998
Inventor
Mark Kopec
Assignee (at issue)
BorgWarner Inc.
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.