Granted Patent
Utility
US 5,787,151 · App. 08/632,597
Telephony based delivery system of messages containing selected greetings
Inventors:
Kenneth Tsutomu Nakatsu, Michael Edward Brett, William Gerald Love, Suran Sam de Silva, Jean-Shin Wu
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Apr 15, 1996
Inventors
Kenneth Tsutomu Nakatsu
Michael Edward Brett
William Gerald Love
Suran Sam de Silva
Jean-Shin Wu
Assignee (at issue)
Nortel Networks Limited
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.