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发明名称
Tubing coupler
摘要
申请公布号
US2473388(A)
申请公布日期
1949.06.14
申请号
US19450581597
申请日期
1945.03.08
申请人
SAFWAY STEEL PRODUCTS INC.
发明人
RAMBO INGAR G.
分类号
E21B17/046;F16B7/12
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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