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发明名称
摘要
申请公布号
JPS4711236(U)
申请公布日期
1972.10.11
申请号
JP19710014411U
申请日期
1971.03.05
申请人
发明人
分类号
G03B27/58;G03B27/04;G03B27/28;(IPC1-7):G03B27/04
主分类号
G03B27/58
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代理人
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