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发明名称
BOREKRONE FOR BRUK VED BORING AV OLJE- OG GASSBROENNER.
摘要
申请公布号
NO902381(D0)
申请公布日期
1990.05.29
申请号
NO19900002381
申请日期
1990.05.29
申请人
WEIR PUMPS LTD
发明人
RYALL, MICHAEL LESLIE
分类号
E21B4/16;(IPC1-7):E21B/
主分类号
E21B4/16
代理机构
代理人
主权项
地址
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