Granted Patent
Utility
US 4,951,868 · App. 07/354,631
Pre-glued tapered tray with gussets and flanges
Inventor:
Duane R. Mode
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: May 19, 1989
Inventor
Duane R. Mode
Assignee (at issue)
Waldorf 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.