Granted Patent
Utility
US 4,908,913 · App. 07/387,989
Safety hook
Inventor:
Tomohiro Mori
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Aug 1, 1989
Inventor
Tomohiro Mori
Assignee (at issue)
Yoshida Kogyo K.K.
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.