Granted Patent
Utility
US 6,148,063 · App. 08/759,094
Semi-interruptible messages for telephone systems making voice announcements
Inventors:
Paul Michael Brennan, Anne Grosman, Robert A. Williamson
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Nov 29, 1996
Inventors
Paul Michael Brennan
Anne Grosman
Robert A. Williamson
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.