Granted Patent
Utility
US 4,317,518 · App. 06/184,092
Carton with reclosable spout and blank therefor
Inventor:
Duane R. Mode
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Sep 4, 1980
Inventor
Duane R. Mode
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.