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发明名称
摘要
申请公布号
FR2017474(A1)
申请公布日期
1970.05.22
申请号
FR19690026724
申请日期
1969.08.04
申请人
MANNESMANN AG
发明人
分类号
B21B25/00;B21B25/02;B21C3/16;(IPC1-7):B21B25/00
主分类号
B21B25/00
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