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经营范围
发明名称
ECHO CANCELER
摘要
申请公布号
JPH04196624(A)
申请公布日期
1992.07.16
申请号
JP19900321623
申请日期
1990.11.26
申请人
FUJITSU LTD
发明人
MIYAZAKI TAKESHI
分类号
H04B3/23
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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