Granted Patent
Utility
US 6,495,031 · App. 09/906,565
Enclosed belt filter apparatus
Inventor:
Jack R. Bratten
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Jul 16, 2001
Inventor
Jack R. Bratten
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.