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发明名称
摘要
申请公布号
JPS5419779(B1)
申请公布日期
1979.07.18
申请号
JP19710049608
申请日期
1971.07.07
申请人
发明人
分类号
G03B17/18;(IPC1-7):G03B17/18
主分类号
G03B17/18
代理机构
代理人
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地址
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