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申请公布号
JPS5724575(U)
申请公布日期
1982.02.08
申请号
JP19800100741U
申请日期
1980.07.17
申请人
发明人
分类号
G04B37/08;G12B9/04;(IPC1-7):G04B37/08
主分类号
G04B37/08
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