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发明名称
APPARATUS FOR FORMING PIPES WITH HELICALLY EXTENDING SEAM OF A STEEL RIBBON OR SHEETLI LISTOVOJJ STALI
摘要
申请公布号
PL120810(B1)
申请公布日期
1982.03.31
申请号
PL19780209156
申请日期
1978.08.21
申请人
发明人
分类号
B21C;B21C37/12;(IPC1-7):B21C37/12
主分类号
B21C
代理机构
代理人
主权项
地址
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