Granted Patent
Utility
US 5,987,446 · App. 08/747,298
Searching large collections of text using multiple search engines concurrently
Inventors:
Douglas A. Corey, Thomas K. Landauer, Karen Lochbaum
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Nov 12, 1996
Inventors
Douglas A. Corey
Thomas K. Landauer
Karen Lochbaum
Assignees (at issue)
U S West, Inc.
MediaOne Group, 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.