Granted Patent
Utility
US 4,287,247 · App. 06/072,314
Packing laminate provided with crease lines
Inventors:
Wilhelm Reil, Jorg Trabitzsch
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Sep 4, 1979
Inventors
Wilhelm Reil
Jorg Trabitzsch
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.