Granted Patent
Utility
US 6,236,967 · App. 09/100,611
Tone and speech recognition in communications systems
Inventors:
Lynne Shapiro Brotman, Randy G. Goldberg
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Jun 19, 1998
Inventors
Lynne Shapiro Brotman
Randy G. Goldberg
Assignee (at issue)
AT&T CORP.
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.