Granted Patent
Utility
US 6,813,356 · App. 09/975,499
Method and system in a telephone exchange system
Inventors:
Jari Kuvaja, Sakari Molin, Sami Kilkkila
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Oct 10, 2001
Inventors
Jari Kuvaja
Sakari Molin
Sami Kilkkila
Assignee (at issue)
Nokia
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.