Granted Patent
Utility
US 4,424,260 · App. 06/254,086
Packing material for aseptic packages
Inventor:
Herwig Pupp
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Apr 14, 1981
Inventor
Herwig Pupp
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.