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发明名称
摘要
申请公布号
FR2140381(A1)
申请公布日期
1973.01.19
申请号
FR19720013283
申请日期
1972.04.14
申请人
MANNESMANN MEER AG
发明人
分类号
B21B21/00;(IPC1-7):B21B21/00;B21B1/00
主分类号
B21B21/00
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代理人
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