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发明名称
摘要
申请公布号
JPS56121191(U)
申请公布日期
1981.09.16
申请号
JP19800018995U
申请日期
1980.02.15
申请人
发明人
分类号
G04C3/00;G04C10/00;G04C21/00;G04C21/02;G04G13/02;G04G99/00;(IPC1-7):G04C3/00;G04G1/00
主分类号
G04C3/00
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代理人
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地址
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