Granted Patent
Utility
US 5,535,299 · App. 08/146,612
Adaptive error control for ADPCM speech coders
Inventor:
Neal Riedel
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Nov 2, 1993
Inventor
Neal Riedel
Assignee (at issue)
Pacific Communication Sciences, 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.