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发明名称
摘要
申请公布号
FR2128497(A1)
申请公布日期
1972.10.20
申请号
FR19720007149
申请日期
1972.03.02
申请人
BAYER AG
发明人
分类号
G02B5/32;G02B6/124;G02B6/13;(IPC1-7):G02B5/00;H01P11/00
主分类号
G02B5/32
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