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发明名称
摘要
申请公布号
JPS4710574(U)
申请公布日期
1972.10.07
申请号
JP19710012626U
申请日期
1971.03.02
申请人
发明人
分类号
G04C9/04;G04C9/00;(IPC1-7):G04C9/00
主分类号
G04C9/04
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