Granted Patent
Utility
US 6,751,482 · App. 10/190,058
Wireless mobile telephone system with alternative power instruments and DTMF Capability
Inventor:
Byard G. Nilsson
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Jul 2, 2002
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.