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发明名称
摘要
申请公布号
JPS5441333(B2)
申请公布日期
1979.12.07
申请号
JP19730033310
申请日期
1973.03.23
申请人
发明人
分类号
G02B15/20;G02B13/00;G02B15/14;G02B15/17
主分类号
G02B15/20
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代理人
主权项
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