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发明名称
Sucker rod safety joint
摘要
申请公布号
US3100662(A)
申请公布日期
1963.08.13
申请号
US19610100184
申请日期
1961.04.03
申请人
HOWARD ROBERT G
发明人
HOWARD ROBERT G.
分类号
E21B17/06
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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