Granted Patent
Utility
US 6,456,338 · App. 09/125,640
Television tuning system
Inventor:
Henry C. Yuen
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Dec 30, 1998
Inventor
Henry C. Yuen
Assignee (at issue)
E Guide, 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.