Granted Patent
Utility
US 5,681,252 · App. 08/534,251
Apparatus for constructing multi-piece carton pre-forms
Inventor:
Kelly Ziegler
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: Sep 26, 1995
Inventor
Kelly Ziegler
Assignee (at issue)
Riverwood International Corporation
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.