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发明名称
Hydraulischer Strahldrehbohrkopf fuer harte Gesteinsformationen
摘要
申请公布号
DE1292602(B)
申请公布日期
1969.04.17
申请号
DE196400G1576
申请日期
1964.09.22
申请人
GULF RESEARCH & DEVELOPMENT COMPANY
发明人
JENNINGS GOODWIN, ROBERT;ALBIN MORI, ERNEST;LEWIS PEKAREK, JOSEPH;WILLIAM SCHAUB, PAUL;EDWARD ZINKHAM, ROBERT
分类号
E21B7/18;E21B10/60
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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