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经营范围
发明名称
Drill stem supporter and stabilizer
摘要
申请公布号
US2783028(A)
申请公布日期
1957.02.26
申请号
US19550507426
申请日期
1955.05.10
申请人
WILLIAM T. JONES;ROY L. HARDING;THOMAS E. JAMISON, SR.;MACK SAMPSON;GENE LOVE;CHARLES F. KOEHNE, JR.
发明人
JR. THOMAS E. JAMISON,
分类号
E21B17/10;E21B23/04
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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