Granted Patent
Utility
US 4,371,364 · App. 06/188,469
Method for the manufacture of a printed, pre-creased packing material web provided with opening indication
Inventor:
Hans Rausing
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Sep 18, 1980
Inventor
Hans Rausing
Assignee (at issue)
Tetra Pak International AB
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.