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发明名称
摘要
申请公布号
FR2082878(A5)
申请公布日期
1971.12.10
申请号
FR19700011453
申请日期
1970.03.31
申请人
DYNAFLEX
发明人
分类号
B21D39/04;F16L33/32;(IPC1-7):B21C51/00;F16L31/00
主分类号
B21D39/04
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