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发明名称
ECHO CANCELLER
摘要
申请公布号
JPS647821(A)
申请公布日期
1989.01.11
申请号
JP19870163653
申请日期
1987.06.30
申请人
OKI ELECTRIC IND CO LTD
发明人
TSUJIKADO MITSUO;MIYAMOTO RYOICHI;NAKANO YOSHIKAZU
分类号
H04B3/23;H04B7/015
主分类号
H04B3/23
代理机构
代理人
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地址
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