Granted Patent
Utility
US 6,249,808 · App. 09/212,324
Wireless delivery of message using combination of text and voice
Inventor:
Nambirajan Seshadri
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Dec 15, 1998
Inventor
Nambirajan Seshadri
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.