Granted Patent
Utility
US 4,475,655 · App. 06/399,831
Packing container
Inventors:
Pär Andersson, Rolf Viberg
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Jul 19, 1982
Inventors
Pär Andersson
Rolf Viberg
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.