Granted Patent
Utility
US 4,629,832 · App. 06/649,118
Communication system administration method and circuitry
Inventors:
Robert A. Carson, Mary S. Petrick, Lee A. Vallone, John D. Walker
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Sep 10, 1984
Inventors
Robert A. Carson
Mary S. Petrick
Lee A. Vallone
John D. Walker
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.