Granted Patent
Utility
US 4,331,231 · App. 06/189,098
Display tray with tilt platform
Inventor:
Daniel J. Boyle
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Sep 22, 1980
Inventor
Daniel J. Boyle
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.