Granted Patent
Utility
US 4,671,079 · App. 06/797,422
Chambered cooler
Inventor:
Joseph Petrantoni
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Nov 12, 1985
Inventor
Joseph Petrantoni
Assignees (at issue)
David J. Petrantoni
Mark J. Petrantoni
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.