Granted Patent
Utility
US 6,449,286 · App. 09/151,386
R2 multi-frequency compelled signalling using a DSP on a network termination card
Inventors:
Barry W. Jones, Daniel F. Baker
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Sep 10, 1998
Inventors
Barry W. Jones
Daniel F. Baker
Assignee (at issue)
Rockwell Semiconductor Systems, 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.