Granted Patent
Utility
US 6,735,775 · App. 09/289,758
Audience rating system for digital television and radio
Inventor:
Enrico Emilio Massetti
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Apr 12, 1999
Inventor
Enrico Emilio Massetti
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.