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发明名称
摘要
申请公布号
FR2271591(B1)
申请公布日期
1977.06.10
申请号
FR19740003882
申请日期
1974.01.31
申请人
RETHORE GERARD
发明人
分类号
G02B27/02;(IPC1-7):G02B27/02;G02B25/00
主分类号
G02B27/02
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