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发明名称
Verfahren zum Aufweiten von Rohren mit Hilfe eines kurzhubige Hin- und Herbewegungenausfuehrenden Aufweitedornes
摘要
申请公布号
DE726625(C)
申请公布日期
1942.10.19
申请号
DE1937M138186D
申请日期
1937.05.29
申请人
MANNESMANNROEHREN-WERKE
发明人
HEETKAMP HEINRICH
分类号
B21C1/24
主分类号
B21C1/24
代理机构
代理人
主权项
地址
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