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发明名称
摘要
申请公布号
GB823860(A)
申请公布日期
1959.11.18
申请号
GB19560013831
申请日期
1956.05.04
申请人
发明人
分类号
H01C3/10
主分类号
H01C3/10
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代理人
主权项
地址
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