Granted Patent
Utility
US 5,926,789 · App. 08/770,025
Audio-based wide area information system
Inventors:
Daniel Barbara, Shamim A. Naqvi
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Dec 19, 1996
Inventors
Daniel Barbara
Shamim A. Naqvi
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.