Granted Patent
Utility
US 4,989,735 · App. 07/567,610
Dispensing carton
Inventor:
Patrick J. O'Brien
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Aug 13, 1990
Inventor
Patrick J. O'Brien
Assignee (at issue)
Container Corporation of America
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.