Granted Patent
Utility
US 6,580,927 · App. 09/953,766
Wireless mobile telephone system with voice-dialing telephone instruments and DTMF capability
Inventor:
Byard G. Nilsson
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Sep 16, 2001
Inventor
Byard G. Nilsson
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.