Granted Patent
Utility
US 5,493,086 · App. 07/980,855
Monitoring and regulating device for a fluid such as engine oil
Inventors:
Frank W. Murphy, Jr., Eric Miller, David Nunneley, Charles R. Lawrence
Patented Case
View Patent ↗
Granted: Feb 20, 1996
Filed: Nov 24, 1992
Inventors
Frank W. Murphy, Jr.
Eric Miller
David Nunneley
Charles R. Lawrence
Assignee (at issue)
Murphy Management, 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.