Granted Patent
Utility
US 6,178,237 · App. 08/997,975
Teleconferencing audio bridge
Inventor:
David N. Horn
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Dec 24, 1997
Inventor
David N. Horn
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.