Granted Patent
Utility
US 5,948,968 · App. 09/100,983
Oil mist gauge
Inventor:
Charles W. Ehlert
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Jun 22, 1998
Inventor
Charles W. Ehlert
Assignee (at issue)
Lubrication Systems Company of Texas, LLC
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.