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发明名称
摘要
申请公布号
FR2416489(B1)
申请公布日期
1981.12.11
申请号
FR19790002799
申请日期
1979.02.02
申请人
NIPPON KOGAKU KK
发明人
分类号
G02B9/60;(IPC1-7):G02B9/60
主分类号
G02B9/60
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