Granted Patent
Utility
US 5,657,933 · App. 08/515,646
Adjustable feed plate for paper shredder
Inventor:
Robert M. Williams
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Aug 16, 1995
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.