Granted Patent
Utility
US 5,255,543 · App. 07/745,008
Opener for security package with spring loaded keying mechanism
Inventor:
Boyd C. Wittman
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Aug 14, 1991
Inventor
Boyd C. Wittman
Assignee (at issue)
Empak, Inc.
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.