Granted Patent
Utility
US 4,303,209 · App. 06/149,616
Tension reducer for dual spool retractor
Inventor:
Robert L. Stephenson
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: May 14, 1980
Inventor
Robert L. Stephenson
Assignee (at issue)
ALLIED CONSULTING, INC.
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.