Granted Patent
Utility
US 4,364,666 · App. 06/193,758
Machine for mixing and cooling batches of dry powder ingredients and water
Inventor:
Richard M. Keyes
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Oct 3, 1980
Inventor
Richard M. Keyes
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.