Granted Patent
Utility
US 5,940,740 · App. 08/740,277
Method and apparatus for message transmission verification
Inventors:
David Aas, Ileana A. Leuca
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Oct 25, 1996
Inventors
David Aas
Ileana A. Leuca
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.