Granted Patent
Utility
US 4,838,422 · App. 07/124,285
Data storage container
Inventor:
Barry Gregerson
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Nov 23, 1987
Inventor
Barry Gregerson
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.