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经营范围
发明名称
ECHO SIGNAL SUPPRESSOR
摘要
申请公布号
JPS5961321(A)
申请公布日期
1984.04.07
申请号
JP19820171681
申请日期
1982.09.30
申请人
NIPPON DENKI KK
发明人
ITOU YASUO
分类号
H04B3/20;H04B3/23;H04M1/60;H04M9/00
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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