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发明名称
Christmas tree
摘要
申请公布号
AU728992(C)
申请公布日期
2001.08.16
申请号
AU19970031843
申请日期
1997.06.20
申请人
EXPRO NORTH SEA LIMITED
发明人
JEFFREY CHARLES EDWARDS;MICHAEL GRAHAM MORGAN
分类号
E21B33/035;E21B34/04;(IPC1-7):E21B33/035
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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