Granted Patent
Utility
US 5,606,550 · App. 08/446,156
Echo canceller and method for a voice network using low rate coding and digital speech interpolation transmission
Inventor:
Shrirang Jangi
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: May 22, 1995
Inventor
Shrirang Jangi
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
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.