Granted Patent
Utility
US 4,988,862 · App. 07/413,362
Optical occupant restraint activation sensor
Inventor:
Dale L. Beltz
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Sep 27, 1989
Inventor
Dale L. Beltz
Assignee (at issue)
Ford Motor Company
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.