Granted Patent
Utility
US 6,347,085 · App. 08/911,133
Method and apparatus for establishing communications between packet-switched and circuit-switched networks
Inventor:
Keith Kelly
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Aug 14, 1997
Inventor
Keith Kelly
Assignee (at issue)
NetSpeak Corporation
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.