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经营范围
发明名称
SYSTEM FOR FORMING ECHO CANCEL SIGNAL
摘要
申请公布号
JPS52100912(A)
申请公布日期
1977.08.24
申请号
JP19760017733
申请日期
1976.02.20
申请人
KOKUSAI DENSHIN DENWA CO LTD
发明人
SAKAKI HIROSHI;SHINTANI SOTOKICHI;KURODA HIDEMI
分类号
H04B3/23;H04B3/20
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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