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发明名称
摘要
申请公布号
FR2108105(A1)
申请公布日期
1972.05.12
申请号
FR19710035016
申请日期
1971.09.29
申请人
NIPPON KOGAKU KK
发明人
分类号
G02B13/04;(IPC1-7):G02B13/00
主分类号
G02B13/04
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代理人
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