Granted Patent
Utility
US 4,928,893 · App. 07/335,224
Food processor
Inventor:
William Prindle
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Apr 10, 1989
Inventor
William Prindle
Assignee (at issue)
Robinson Knife Manufacturing Co., Inc.
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.