Voice mail in a voice over IP telephone system | Patent Publication Number 20040022373

US 20040022373 A1
Patent NumberUS 07123699 B2
Application Number10210902
Filled DateAug 2, 2002
Priority DateAug 2, 2002
Publication DateFeb 5, 2004
Original AssigneeEstech Systems Inc.
Current AssigneeEstech Systems Inc.
Inventor/ApplicantsHarold E. A. Hansen, II
Eric G. Suder
Eric G. Suder
Harold II E. A. Hansen
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