Granted Patent
Utility
US 4,912,765 · App. 07/250,188
Voice band data rate detector
Inventor:
Krishnamoorthy Virupaksha
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Sep 28, 1988
Inventor
Krishnamoorthy Virupaksha
Assignee (at issue)
Communications Satellite Corporation
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.