Granted Patent
Utility
US 5,175,814 · App. 07/472,245
Direct manipulation interface for Boolean information retrieval
Inventors:
Peter Anick, Jeffrey Brennan, Rex A. Flynn, Bryan Alvey, David R. Hanssen, Jeffrey Robbins
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Jan 30, 1990
Inventors
Peter Anick
Jeffrey Brennan
Rex A. Flynn
Bryan Alvey
David R. Hanssen
Jeffrey Robbins
Assignee (at issue)
Digital Equipment Corporation
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.