Information protection system and information protection method | Patent Publication Number 20020174336

US 20020174336 A1
Patent Number-
Application Number10124524
Filled DateApr 17, 2002
Priority DateApr 17, 2002
Publication DateNov 21, 2002
Original AssigneeAt&t Company
Current AssigneeAt&t Company
Inventor/ApplicantsTatsuhiko Sakakibara
Ichiro Kasuga
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