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发明名称
COMMUNICATIONS DEVICE USING SOUND SIGNAL
摘要
申请公布号
JPH06291863(A)
申请公布日期
1994.10.18
申请号
JP19930078230
申请日期
1993.04.05
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
ARIKAWA TOMOHIKO;OKAMOTO MANABU;KOJIMA JUNJI
分类号
H04M1/60;H04M9/00;(IPC1-7):H04M9/00
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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