Granted Patent
Utility
US 4,652,139 · App. 06/852,680
Electronic non-volatile elapsed time meter
Inventor:
James R. Sulcer, Jr.
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Apr 16, 1986
Inventor
James R. Sulcer, Jr.
Assignee (at issue)
Chrysler Motors 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.