Granted Patent
Utility
US 4,148,446 · App. 05/748,655
Dual sensitive retractor
Inventor:
Joseph Sugar
Patented Case
View Patent ↗
Granted: Apr 10, 1979
Filed: Dec 8, 1976
Inventor
Joseph Sugar
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.