Granted Patent
Utility
US 4,935,954 · App. 07/290,935
Automated message retrieval system
Inventors:
John S. Thompson, Thomas J. Tierney, Jr.
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Dec 28, 1988
Inventors
John S. Thompson
Thomas J. Tierney, Jr.
Assignee (at issue)
AT&T CORP.
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.