Granted Patent
Utility
US 4,293,107 · App. 06/068,944
Tension relieving selective engagement mechanism with memory
Inventor:
Avraham Ziv
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Aug 23, 1979
Inventor
Avraham Ziv
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.