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发明名称
Verfahren zur Herstellung des die Spanrille aufweisenden Teiles von Schneckenbohrern durch Kalt- oder Warmverformung
摘要
申请公布号
DE859250(C)
申请公布日期
1952.12.11
申请号
DE1949P054729
申请日期
1949.09.13
申请人
ERNST SCHAEFER NACHF.
发明人
SCHAEFER EUGEN
分类号
B21K5/02
主分类号
B21K5/02
代理机构
代理人
主权项
地址
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