Granted Patent
Utility
US 4,815,254 · App. 07/069,988
Process for erecting and closing a folding carton and apparatus for carrying out this process
Inventor:
Wilhelm Fischer
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Jul 6, 1987
Inventor
Wilhelm Fischer
Assignee (at issue)
Unilever Patent Holdings 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.