Granted Patent
Utility
US 5,000,320 · App. 07/563,361
Paperboard carton having a pour spout and blank for forming the same
Inventor:
Morris W. Kuchenbecker
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Jul 19, 1990
Inventor
Morris W. Kuchenbecker
Assignee (at issue)
JAMES RIVER CORPORATION OF VIRGINIA
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.