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发明名称
Herstellung von Reinigungsoeffnungen an im Pressverfahren erzeugten Rohrkruemmern aus Blei
摘要
申请公布号
DE582161(C)
申请公布日期
1933.08.09
申请号
DED582161D
申请日期
1930.09.25
申请人
MAX BERNSTEIN
发明人
分类号
B21C37/29
主分类号
B21C37/29
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