Granted Patent
Utility
US 6,683,871 · App. 09/335,279
Internet protocol telephony
Inventors:
Chinmei Chen Lee, Milo Orsic, Werner Ulrich
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Jun 17, 1999
Inventors
Chinmei Chen Lee
Milo Orsic
Werner Ulrich
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.