Granted Patent
Utility
US 4,420,077 · App. 06/309,909
Display card with concave panel
Inventor:
Harry I. Roccaforte
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Oct 9, 1981
Inventor
Harry I. Roccaforte
Assignee (at issue)
Champion International Corporation Limited
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.