Granted Patent
Utility
US 6,199,161 · App. 09/117,133
Management of authentication keys in a mobile communication system
Inventor:
Jouko Ahvenainen
Patented Case
View Patent ↗
Granted: Mar 6, 2001
Filed: Jul 23, 1998
Inventor
Jouko Ahvenainen
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.