Granted Patent
Utility
US 4,275,567 · App. 06/135,492
Method and apparatus for controlling operation of a soft-serve machine
Inventor:
Stephen W. Schwitters
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Mar 31, 1980
Inventor
Stephen W. Schwitters
Assignee (at issue)
Beatrice Foods Co.
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.