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发明名称
Verfahren zur Herstellung von mehrschichtigen Metallrohren
摘要
申请公布号
DE767011(C)
申请公布日期
1951.07.26
申请号
DE1935K139696D
申请日期
1935.10.23
申请人
FR. KAMMERER A. G.
发明人
分类号
B21C37/15;B23K20/00;B23K20/02
主分类号
B21C37/15
代理机构
代理人
主权项
地址
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