Granted Patent
Utility
US 5,247,443 · App. 07/967,938
Electronic control for vehicle four wheel drive system
Inventor:
Bradley T. Gilliam
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Oct 28, 1992
Inventor
Bradley T. Gilliam
Assignee (at issue)
DANA LIMITED
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.