Granted Patent
Utility
US 5,447,369 · App. 08/163,314
Industrial mixer
Inventor:
Russell Boxall
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Dec 8, 1993
Inventor
Russell Boxall
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.