Granted Patent
Utility
US 6,006,087 · App. 08/838,613
Method and system for delivering a voice mail notification to a subscriber using cellular phone network
Inventor:
Umesh J. Amin
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Apr 10, 1997
Inventor
Umesh J. Amin
Assignee (at issue)
AT&T WIRELESS SERVICES, 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.