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发明名称
BAKING-RESISTANT HIGH AIRTIGHT OIL WELL PIPE JOINT
摘要
申请公布号
JPS62209291(A)
申请公布日期
1987.09.14
申请号
JP19860049322
申请日期
1986.03.06
申请人
NIPPON STEEL CORP
发明人
TSURU EIJI;KAMIYAMA FUJIMASA;OGASAWARA MASAO
分类号
F16L15/00
主分类号
F16L15/00
代理机构
代理人
主权项
地址
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