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发明名称
摘要
申请公布号
FR2107040(A5)
申请公布日期
1972.05.05
申请号
FR19710027452
申请日期
1971.07.27
申请人
OPTISCHE IND DE OUDE DEL
发明人
分类号
B42F17/00;B42F17/08;(IPC1-7):B42F21/00;B42F7/00;B42F19/00
主分类号
B42F17/00
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