Granted Patent
Utility
US 5,912,951 · App. 08/839,333
Voice mail system with multi-retrieval mailboxes
Inventors:
Robert A. Checchio, Steven T. Kaish, Nancy A. Kowalsky, Margaret H. Redberg, Gregory C. Sheehan
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Apr 17, 1997
Inventors
Robert A. Checchio
Steven T. Kaish
Nancy A. Kowalsky
Margaret H. Redberg
Gregory C. Sheehan
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.