Granted Patent
Utility
US 4,482,056 · App. 06/495,599
Carton with recessed opener
Inventor:
Daniel P. Dutcher
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: May 18, 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.