Granted Patent
Utility
US 6,366,777 · App. 09/308,890
Using two SIM cards with same MSISDN number
Inventor:
Markku Uusitalo
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: May 26, 1999
Inventor
Markku Uusitalo
Assignee (at issue)
Nokia Telecommunications Oy
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.