Granted Patent
Utility
US 4,923,079 · App. 07/403,064
Collapsible container
Inventor:
Dennis M. Foy
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Sep 1, 1989
Inventor
Dennis M. Foy
Assignee (at issue)
Ropak Corporation
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.