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经营范围
发明名称
SVIVELKOPLINGSELEMENT.
摘要
申请公布号
NO157990(B)
申请公布日期
1988.03.14
申请号
NO19810003320
申请日期
1981.09.30
申请人
HUNTING OILFIELD SERVICES LTD
发明人
DOPYERA, EMIL E.;MILLER, JACK E.
分类号
F16L27/053;(IPC1-7):F16L27/04
主分类号
F16L27/053
代理机构
代理人
主权项
地址
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