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发明名称
Verfahren zur Herstellung von Nippeln mit inneren Laengsrippen
摘要
申请公布号
DE673679(C)
申请公布日期
1939.03.25
申请号
DE1934N037065D
申请日期
1934.08.17
申请人
FRIEDR. NEBLUNG KOMM.-GES.
发明人
分类号
B21C37/29
主分类号
B21C37/29
代理机构
代理人
主权项
地址
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