Granted Patent
Utility
US 6,475,397 · App. 09/722,151
Method and means for filter back flushing
Inventor:
Tommy Sanderson
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Nov 27, 2000
Inventor
Tommy Sanderson
Assignee (at issue)
Mepsco, 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.