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发明名称
THREE-WAY CALL DETECTION USING STEGANOGRAPHY
摘要
申请公布号
EP1661371(A4)
申请公布日期
2009.05.06
申请号
EP20040809530
申请日期
2004.08.04
申请人
INMATE TELEPHONE, INC.
发明人
MARTIN, THOMAS, J.
分类号
H04M3/42;H04M;H04M1/663;H04M1/665;H04M3/22;H04M11/06
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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