Granted Patent
Utility
US 4,665,545 · App. 06/733,955
Communication system having multi-mode line selection buttons
Inventors:
Duane Galensky, Adrian A. Giuliani
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: May 14, 1985
Inventors
Duane Galensky
Adrian A. Giuliani
Assignees (at issue)
American Telephone and Telegraph, Co.
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.