Granted Patent
Utility
US 4,106,721 · App. 05/769,682
Safety belt retractor with dual tension retraction means
Inventor:
Charles J. Ulrich
Patented Case
View Patent ↗
Granted: Aug 15, 1978
Filed: Feb 17, 1977
Inventor
Charles J. Ulrich
Assignee (at issue)
American Safety Equipment 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.