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发明名称
AUTOMATIC CONTROL SYSTEM FOR SOUND VOLUME OF CONFERENCE TELEPHONE
摘要
申请公布号
JPH01278160(A)
申请公布日期
1989.11.08
申请号
JP19880108201
申请日期
1988.04.30
申请人
FUJITSU LTD
发明人
KOIKE TAKAYASU
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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