Granted Patent
Utility
US 4,303,208 · App. 05/733,356
Friction clutch operated reduced tension safety retraction means
Inventor:
Akira Tanaka
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Oct 18, 1976
Inventor
Akira Tanaka
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.