Granted Patent
Utility
US 6,418,206 · App. 09/077,969
Procedure and system for the setting up of calls
Inventor:
Osmo Leppanen
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Feb 9, 1999
Inventor
Osmo Leppanen
Assignee (at issue)
Sonera Oyj
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.