Granted Patent
Utility
US 4,646,346 · App. 06/693,334
Integrated message service system
Inventors:
William D. Emerson, Deborah Hill, Karen C. Loeb, Albert Mizrahi, Charles T. Schlegel, Lowell C. Scott
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Jan 22, 1985
Inventors
William D. Emerson
Deborah Hill
Karen C. Loeb
Albert Mizrahi
Charles T. Schlegel
Lowell C. Scott
Assignees (at issue)
AT&T CORP.
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.