Granted Patent
Utility
US 6,672,079 · App. 10/222,754
Ice cream machine having an auxiliary evaporator tank
Inventor:
Harold F. Ross
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Aug 16, 2002
Inventor
Harold F. Ross
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.