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发明名称
Verfahren zur Herstellung von Rohren aus einem schraubenförmig gewickelten Blechband
摘要
申请公布号
CH485499(A)
申请公布日期
1970.02.15
申请号
CH19660015790
申请日期
1966.11.01
申请人
SIEGWART,EMIL
发明人
SIEGWART,EMIL
分类号
B21C37/12;(IPC1-7):B21C37/06;B21D39/02
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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