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发明名称
摘要
申请公布号
FR2181954(A1)
申请公布日期
1973.12.07
申请号
FR19730014571
申请日期
1973.04.20
申请人
WEAN UNITED INC,US
发明人
分类号
B21B31/10;B21B31/08;(IPC1-7):21B31/08
主分类号
B21B31/10
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