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发明名称
Schraubengangfoermig gerilltes Rohr und Verfahren zu seiner Herstellung
摘要
申请公布号
DE1157040(B)
申请公布日期
1963.11.07
申请号
DE1952H028063
申请日期
1952.01.17
申请人
WILHELM HEGLER
发明人
HEGLER WILHELM
分类号
B21C37/12;F16L11/16
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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