Granted Patent
Utility
US 4,634,007 · App. 06/803,632
Carton blank with perforated tear line
Inventor:
Kevin R. Rusnock
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Dec 2, 1985
Inventor
Kevin R. Rusnock
Assignee (at issue)
Adolph Coors Company
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.