Granted Patent
Utility
US 6,731,642 · App. 09/303,832
Internet telephony using network address translation
Inventors:
Michael Borella, Nurettin Burcak Beser, Ikhlaq S. Sidhu, Guido M. Schuster
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: May 3, 1999
Inventors
Michael Borella
Nurettin Burcak Beser
Ikhlaq S. Sidhu
Guido M. Schuster
Assignee (at issue)
3Com 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.