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发明名称
VOICE COMMUNICATION EQUIPMENT
摘要
申请公布号
JPH04348645(A)
申请公布日期
1992.12.03
申请号
JP19910120903
申请日期
1991.05.27
申请人
HITACHI LTD
发明人
KOYAMA TAKUO;TANAKA AKIRA
分类号
H04M1/65;H04M11/10
主分类号
H04M1/65
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代理人
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