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发明名称
SCREW JOINT FOR OIL WELL PIPE
摘要
申请公布号
JPS56113885(A)
申请公布日期
1981.09.08
申请号
JP19800015444
申请日期
1980.02.13
申请人
NIPPON STEEL CORP
发明人
INOUE SEISUKE
分类号
F16L15/04;F16L15/00
主分类号
F16L15/04
代理机构
代理人
主权项
地址
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