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经营范围
发明名称
Threaded coupling having staggered rows of wedge pins
摘要
申请公布号
US2864629(A)
申请公布日期
1958.12.16
申请号
US19540435995
申请日期
1954.06.11
申请人
HALL SR JESSE E
发明人
SR. JESSE E. HALL,
分类号
E03B3/08;E21B17/043;F16L15/08
主分类号
E03B3/08
代理机构
代理人
主权项
地址
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