Granted Patent
Utility
US 4,308,985 · App. 06/148,908
Tray container with reinforced sidewalls
Inventors:
Guelfo A. Manizza, William M. Brown
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: May 12, 1980
Inventors
Guelfo A. Manizza
William M. Brown
Assignee (at issue)
Federal Paper Board Co., Inc.
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.