Granted Patent
Utility
US 4,246,659 · App. 06/045,824
Pop-up hat and blank for forming same
Inventor:
Russell J. Lyons
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Jun 5, 1979
Inventor
Russell J. Lyons
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.