Granted Patent
Utility
US 6,736,309 · App. 10/295,171
Quick erecting foldable portable cooler
Inventors:
Frank E. Westerman, Frank G. Westerman
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Nov 15, 2002
Inventors
Frank E. Westerman
Frank G. Westerman
Assignee (at issue)
Wes Pak, 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.