Granted Patent
Utility
US 4,200,244 · App. 05/902,741
Readily installed food processor cutter tool with negative blade lift
Inventor:
Carl G. Sontheimer
Patented Case
View Patent ↗
Granted: Apr 29, 1980
Filed: May 3, 1978
Inventor
Carl G. Sontheimer
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.