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发明名称
摘要
申请公布号
FR2169936(B1)
申请公布日期
1976.11.05
申请号
FR19730001835
申请日期
1973.01.19
申请人
SCHNEIDER CO OPTISCHE WERKE JOS
发明人
分类号
G02B15/17;(IPC1-7):G02B15/14
主分类号
G02B15/17
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代理人
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