Granted Patent
Utility
US 6,219,645 · App. 09/453,113
Enhanced automatic speech recognition using multiple directional microphones
Inventor:
Charles Calvin Byers
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Dec 2, 1999
Inventor
Charles Calvin Byers
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.