Granted Patent
Utility
US 6,526,577 · App. 09/444,882
Enhanced interactive program guide
Inventors:
Edward B. Knudson, Joel G. Hassell, Michael D. Ellis, Pamela L. McKissick
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Nov 22, 1999
Inventors
Edward B. Knudson
Joel G. Hassell
Michael D. Ellis
Pamela L. McKissick
Assignee (at issue)
United Video Properties, 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.