Granted Patent
Utility
US 5,809,021 · App. 08/664,994
Multi-service switch for a telecommunications network
Inventors:
Felix V. Diaz, Raymond L. Hogg, Daniel J. Raz, Kathy Ann Thompson, Gregory L. Langdon, W. Keith Brewer
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jun 10, 1996
Inventors
Felix V. Diaz
Raymond L. Hogg
Daniel J. Raz
Kathy Ann Thompson
Gregory L. Langdon
W. Keith Brewer
Assignee (at issue)
DSC Communications 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.