Granted Patent
Utility
US 6,038,304 · App. 08/931,969
Telecommunications switch incorporating automatic conferencing service
Inventor:
Brian Hart
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Sep 17, 1997
Inventor
Brian Hart
Assignee (at issue)
Nortel Networks 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.