Granted Patent
Utility
US 6,101,834 · App. 09/083,340
Ice cream machine having an evaporator tank which evenly freezes ice cream
Inventor:
Harold F. Ross
Patented Case
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Granted: Aug 15, 2000
Filed: May 22, 1998
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.