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发明名称
摘要
申请公布号
FR2108613(A5)
申请公布日期
1972.05.19
申请号
FR19710034714
申请日期
1971.09.27
申请人
GRETAG AG
发明人
分类号
G03D3/12;(IPC1-7):B65H17/00;B65H29/00;G03D3/00
主分类号
G03D3/12
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