Granted Patent
Utility
US 4,740,163 · App. 06/724,686
Channel opening feature for cartons
Inventor:
Morris W. Kuchenbecker
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Apr 19, 1985
Inventor
Morris W. Kuchenbecker
Assignee (at issue)
James River-Norwalk
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.