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经营范围
发明名称
Threaded pipe end
摘要
申请公布号
US2340706(A)
申请公布日期
1944.02.01
申请号
US19410423740
申请日期
1941.12.20
申请人
BUDD INDUCTION HEATING, INC.
发明人
SOMES HOWARD E.
分类号
E21B17/042;F16L15/00
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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