Granted Patent
Utility
US 5,692,039 · App. 08/460,680
Improved data transmission via a public switched telephone network
Inventors:
Russell J. Brankley, James M. Dorsey
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Jun 2, 1995
Inventors
Russell J. Brankley
James M. Dorsey
Assignee (at issue)
Bell Atlantic Network Services
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.