Granted Patent
Utility
US 5,315,646 · App. 07/629,447
Systems and processes for providing multiple interfaces for telephone services
Inventors:
David L. Babson, III, James A. Bajzath, Thomas C. Ely
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Dec 18, 1990
Inventors
David L. Babson, III
James A. Bajzath
Thomas C. Ely
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.