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发明名称
摘要
申请公布号
JPS5757364(Y2)
申请公布日期
1982.12.09
申请号
JP19720102576U
申请日期
1972.09.02
申请人
发明人
分类号
G03B7/20;G03B19/12;(IPC1-7):G03B7/20
主分类号
G03B7/20
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代理人
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