Granted Patent
Utility
US 6,651,448 · App. 10/075,089
Ice cream machine including a controlled input to the freezing chamber
Inventors:
Harold F. Ross, Daniel Dorn
Patented Case
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Granted: Nov 25, 2003
Filed: Feb 12, 2002
Inventors
Harold F. Ross
Daniel Dorn
Assignee (at issue)
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.