Granted Patent
Utility
US 4,498,581 · App. 06/540,377
Beverage can carton with opening panel
Inventor:
Daniel P. Dutcher
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Oct 11, 1983
Inventor
Daniel P. Dutcher
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.