Granted Patent
Utility
US 6,731,625 · App. 08/795,270
System, method and article of manufacture for a call back architecture in a hybrid network with support for internet telephony
Inventors:
Guido M. Eastep, Paul D. Litzenberger, Shannon R. Orebaugh
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Feb 10, 1997
Inventors
Guido M. Eastep
Paul D. Litzenberger
Shannon R. Orebaugh
Assignee (at issue)
MCI 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.