Granted Patent
Utility
US 4,389,802 · App. 06/320,330
Scalloped paperboard insert for use with plastic lid
Inventors:
Edwin C. McLaren, David J. Adamek
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Nov 12, 1981
Inventors
Edwin C. McLaren
David J. Adamek
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.