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发明名称
Tool with multisize ball seat having segmentd arcuate ball support member
摘要
申请公布号
GB201221172(D0)
申请公布日期
2013.01.09
申请号
GB20120021172
申请日期
2011.08.12
申请人
BAKER HUGHES INCORPORATED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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