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发明名称
Selbsttaetig sich einfuehrende und zentrierende Rohrverbindung fuer Tiefbohrzwecke
摘要
申请公布号
DE1248583(B)
申请公布日期
1967.08.31
申请号
DE196600H8445
申请日期
1966.02.04
申请人
FRITZ HUNTSINGER;CARL FREDERICK HUNTSINGER;FRITZ ROY HUNTSINGER;JOEL LEE GLENN;JAMES WILLIAM ELLISON HANES
发明人
HANES JAMES WILLIAM ELLISON
分类号
E21B17/08;F16L37/088
主分类号
E21B17/08
代理机构
代理人
主权项
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