Granted Patent
Utility
US 5,577,241 · App. 08/350,967
Information retrieval system and method with implementation extensible query architecture
Inventor:
Graham Thornton Spencer
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Dec 7, 1994
Inventor
Graham Thornton Spencer
Assignee (at issue)
Excite, 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.