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发明名称
Verfahren und Einrichtung zur Herstellung hohler Metallkörper.
摘要
申请公布号
CH271442(A)
申请公布日期
1950.10.31
申请号
CHD271442
申请日期
1947.09.23
申请人
KELLER,JAKOB
发明人
KELLER,JAKOB
分类号
B21D22/28
主分类号
B21D22/28
代理机构
代理人
主权项
地址
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