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发明名称
TRANSMITTER/RECEIVER FOR USING EARPLUG-SHAPED TRANSDUCER
摘要
申请公布号
JPH07312634(A)
申请公布日期
1995.11.28
申请号
JP19940103766
申请日期
1994.05.18
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
MATSUMOTO KOICHI;NISHINO YUTAKA;YUSE CHIKARA;MIHASHI KAZUMASA
分类号
H04R1/00;H04M1/05;(IPC1-7):H04M1/05
主分类号
H04R1/00
代理机构
代理人
主权项
地址
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