Granted Patent
Utility
US 4,534,023 · App. 06/539,813
Plural communication channel protocol support systems
Inventors:
Stephen R. Peck, John B. Sharp
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Oct 7, 1983
Inventors
Stephen R. Peck
John B. Sharp
Assignee (at issue)
AT&T Information Systems 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.