Granted Patent
Utility
US 4,383,417 · App. 06/298,677
Soft-serve freezer control
Inventor:
Tom N. Martineau
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Sep 2, 1981
Inventor
Tom N. Martineau
Assignee (at issue)
Stoelting, LLC
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.