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发明名称
摘要
申请公布号
JPH03116528(U)
申请公布日期
1991.12.03
申请号
JP19900024231U
申请日期
1990.03.09
申请人
发明人
分类号
G04C21/16;G04G21/00;G04G99/00;H01H13/04;H01H13/14;H01H13/70;(IPC1-7):H01H13/04;G04G1/00
主分类号
G04C21/16
代理机构
代理人
主权项
地址
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