Granted Patent
Utility
US 6,330,610 · App. 08/985,389
Multi-stage data filtering system employing multiple filtering criteria
Inventors:
Eric E. Docter, William D. Hofmann, Paul E. Hurley
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Dec 4, 1997
Inventors
Eric E. Docter
William D. Hofmann
Paul E. Hurley
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.