Granted Patent
Utility
US 4,631,896 · App. 06/722,382
Method, apparatus and blank for packing at least one article in a self-supporting wrapping having the shape of a rectangular parallelepiped
Inventor:
Petrus W. Van Der Zon
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Apr 12, 1985
Inventor
Petrus W. Van Der Zon
Assignee (at issue)
Internationale Otrool Maatschappij Octropa B.V.
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.