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经营范围
发明名称
VOICE MUTING SYSTEM
摘要
申请公布号
JPH04263528(A)
申请公布日期
1992.09.18
申请号
JP19910043970
申请日期
1991.02.18
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
TANAKA KAZUE;TAKAGI HIROFUMI
分类号
H04B14/06;H04L1/00;H04M1/00;H04M1/253
主分类号
H04B14/06
代理机构
代理人
主权项
地址
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