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发明名称
Verfahren zum Verschliessen des offenen Schaftendes von im Teller und Schaft hohlen Ventilen fuer Verbrennungskraftmaschinen
摘要
申请公布号
DE729839(C)
申请公布日期
1943.01.04
申请号
DE1938A087485D
申请日期
1938.07.15
申请人
AUTO UNION A.-G.
发明人
分类号
B21K1/22
主分类号
B21K1/22
代理机构
代理人
主权项
地址
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