Granted Patent
Utility
US 4,939,675 · App. 07/288,373
Digital system for controlling mechanical instrument gauges
Inventor:
William V. Luitje
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Dec 22, 1988
Inventor
William V. Luitje
Assignee (at issue)
Chrysler Group 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.