Granted Patent
Utility
US 6,482,326 · App. 09/878,887
Method of filtering used cooking oil
Inventors:
James R. Munson, Paul Roberts
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Jun 11, 2001
Inventors
James R. Munson
Paul Roberts
Assignee (at issue)
The Dallas Group of America, 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.