Granted Patent
Utility
US 6,169,986 · App. 09/411,441
System and method for refining search queries
Inventors:
Dwayne Bowman, Ruben E. Ortega, Michael L. Hamrick, Joel R. Spiegel, Timothy R. Kohn
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Oct 1, 1999
Inventors
Dwayne Bowman
Ruben E. Ortega
Michael L. Hamrick
Joel R. Spiegel
Timothy R. Kohn
Assignee (at issue)
Amazon.com, 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.