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发明名称
Floatation device
摘要
申请公布号
GB9901738(D0)
申请公布日期
1999.03.17
申请号
GB19990001738
申请日期
1999.01.27
申请人
SPECIALISED PETROLEUM SERVICES LIMITED
发明人
分类号
E21B23/00;E21B33/16;E21B43/08;E21B43/10
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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