Granted Patent
Utility
US 4,298,123 · App. 06/116,857
Carton core retainers
Inventors:
Harry I. Roccaforte, Jimmy J. Hanko
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Jan 30, 1980
Inventors
Harry I. Roccaforte
Jimmy J. Hanko
Assignee (at issue)
Champion International Corporation Limited
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.