Granted Patent
Utility
US 4,938,431 · App. 07/188,364
Vehicle seat belt retractor
Inventor:
Alan George Smithson
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Apr 29, 1988
Inventor
Alan George Smithson
Assignee (at issue)
B.S.R.D. 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.