Granted Patent
Utility
US 4,458,848 · App. 06/274,719
Removable head rotary tool for food processors
Inventor:
James E. Williams
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Jun 18, 1981
Inventor
James E. Williams
Assignee (at issue)
Cuisinarts Research & Development, 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.