Granted Patent
Utility
US 6,137,878 · App. 09/049,708
Method for outputting user feedback audio messages and telecommunications equipment employing said method
Inventors:
Kim M. Vonder Haar, Philip Hodgson
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Mar 28, 1998
Inventors
Kim M. Vonder Haar
Philip Hodgson
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.