Granted Patent
Utility
US 6,415,029 · App. 09/317,575
Echo canceler and double-talk detector for use in a communications unit
Inventors:
James B. Piket, Lance Foreman Amos, Holly Elizabeth Hall, William Chunhung Yip
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: May 24, 1999
Inventors
James B. Piket
Lance Foreman Amos
Holly Elizabeth Hall
William Chunhung Yip
Assignee (at issue)
Motorola, 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.