Granted Patent
Utility
US 5,103,648 · App. 07/530,895
Oil level control system
Inventor:
William J. Barbier
Patented Case
View Patent ↗
Granted: Apr 14, 1992
Filed: May 29, 1990
Inventor
William J. Barbier
Assignee (at issue)
AC&R Components, 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.