Granted Patent
Utility
US 6,404,863 · App. 08/923,447
First party signalling for call waiting calling number identification (CWCID) system
Inventor:
Norman Beamish
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Sep 4, 1997
Inventor
Norman Beamish
Assignee (at issue)
Conexant Systems, LLC
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.