Granted Patent
Utility
US 5,974,299 · App. 09/085,501
Audience rating system for digital television and radio
Inventor:
Enrico Emilio Massetti
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: May 27, 1998
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.