Granted Patent
Utility
US 4,432,489 · App. 06/388,499
Pie carton
Inventor:
Raymond A. Cote
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Jun 14, 1982
Inventor
Raymond A. Cote
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.