Granted Patent
Utility
US 5,953,399 · App. 08/816,909
PBX selective caller identification authentication
Inventors:
Robert D. Farris, Michael J. Strauss
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Mar 13, 1997
Inventors
Robert D. Farris
Michael J. Strauss
Assignee (at issue)
Bell Atlantic Network Services
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.