Granted Patent
Utility
US 5,519,772 · App. 08/168,612
Network-based telephone system having interactive capabilities
Inventors:
Aaron A. Akman, Patrick Donnelly, Steven A. Hollenbach, Michael Kret
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Jan 31, 1994
Inventors
Aaron A. Akman
Patrick Donnelly
Steven A. Hollenbach
Michael Kret
Assignee (at issue)
Bell Communications Research, 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.