Granted Patent
Utility
US 4,995,656 · App. 07/441,635
Security sealing mechanism
Inventor:
Shunji Akashi
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Nov 27, 1989
Inventor
Shunji Akashi
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.