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经营范围
发明名称
ECHO CONTROL SYSTEM
摘要
申请公布号
JPS56153850(A)
申请公布日期
1981.11.28
申请号
JP19800055510
申请日期
1980.04.28
申请人
KOKUSAI DENSHIN DENWA CO LTD
发明人
YAMAMOTO SEIICHI;KIYAMA SEIJI
分类号
H04B3/23;(IPC1-7):H04B3/23
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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