Granted Patent
Utility
US 5,659,367 · App. 08/368,340
Television on/off detector for use in a video cassette recorder
Inventor:
Henry C. Yuen
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Dec 30, 1994
Inventor
Henry C. Yuen
Assignee (at issue)
INDEX SYSTEMS, LLC
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.