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经营范围
发明名称
Method and apparatus for producing tubes with a helical welding seam
摘要
申请公布号
US3030488(A)
申请公布日期
1962.04.17
申请号
US19590791169
申请日期
1959.02.04
申请人
WILLY H. SCHLIEKER K. G.
发明人
KUCKENS ALEXANDER
分类号
B21C37/12;B23K9/032
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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