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经营范围
发明名称
RETRACTABLE DRILL COLLAR STABILIZER
摘要
申请公布号
CA761311(A)
申请公布日期
1967.06.20
申请号
CAD761311
申请日期
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
JACKSON M. KELLNER
分类号
主分类号
代理机构
代理人
主权项
地址
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