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发明名称
PIPE JOINT WHICH USES CONICAL TRAPEZOIDAL THREADED PART
摘要
申请公布号
JPH0587275(A)
申请公布日期
1993.04.06
申请号
JP19910337739
申请日期
1991.11.27
申请人
VALLOUREC;SUMITOMO METAL IND LTD
发明人
TEIERII NOERU;NAGASAKU SHIGEO
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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