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发明名称
Verfahren und Vorrichtung zum Komplettieren von Bohrloechern
摘要
申请公布号
DE1191318(B)
申请公布日期
1965.04.22
申请号
DE1962T022888
申请日期
1962.10.19
申请人
GEORGE ALFORD THOMAS;JOHN RAYMOND HATCH;DAVID CRAVEN
发明人
THOMAS GEORGE ALFORD
分类号
E21B33/124;E21B33/14
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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