Granted Patent
Utility
US 5,452,860 · App. 08/257,946
Material reducing and shredding apparatus
Inventor:
Robert M. Williams
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Jun 10, 1994
Inventor
Robert M. Williams
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.