Granted Patent
Utility
US 5,313,554 · App. 07/899,529
Backward gain adaptation method in code excited linear prediction coders
Inventor:
Richard Harry Ketchum
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Jun 16, 1992
Inventor
Richard Harry Ketchum
Assignee (at issue)
AT&T Bell Laboratories
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.