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发明名称
Safety joint
摘要
申请公布号
US1982915(A)
申请公布日期
1934.12.04
申请号
US19320640191
申请日期
1932.10.29
申请人
JENKS ABBOTT B
发明人
JENKS ABBOTT B.
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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