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发明名称
Hydraulic jet drill bit
摘要
申请公布号
US3385386(A)
申请公布日期
1968.05.28
申请号
US19670632113
申请日期
1967.04.19
申请人
GULF RESEARCH & DEVELOPMENT COMPANY
发明人
GOODWIN ROBERT J.;MORI ERNEST A.;PEKAREK JOSEPH L.;SCHAUB PAUL W.;ZINKHAM ROBERT E.
分类号
E21B7/18
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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