Granted Patent
Utility
US 4,313,542 · App. 06/161,027
Single-serving pie carton and blank
Inventors:
Harry H. Roberts, Raymond A. Cote
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Jun 19, 1980
Inventors
Harry H. Roberts
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.