Granted Patent
Utility
US 5,297,321 · App. 08/084,127
Fastening device
Inventor:
Ryukichi Murai
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Jul 1, 1993
Inventor
Ryukichi Murai
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.