Granted Patent
Utility
US 6,539,087 · App. 09/715,906
Audio conferencing system
Inventors:
Bruce Walsh, Philip J. Baun, Jr., Robert S. Horne, Paul P. Martel, John T. Watson
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Nov 17, 2000
Inventors
Bruce Walsh
Philip J. Baun, Jr.
Robert S. Horne
Paul P. Martel
John T. Watson
Assignee (at issue)
Spectel Operations, Limited
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.