Granted Patent
Utility
US 4,664,648 · App. 06/842,766
Method and apparatus for making display boxes
Inventor:
Francois Dupuy
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Mar 21, 1986
Inventor
Francois Dupuy
Assignee (at issue)
Dupuy Engineering S.A.
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.