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发明名称
A downhole modulator apparatus
摘要
申请公布号
GB0821177(D0)
申请公布日期
2008.12.24
申请号
GB20080021177
申请日期
2008.11.19
申请人
SONDEX WIRELINE LIMITED
发明人
分类号
E21B47/10
主分类号
E21B47/10
代理机构
代理人
主权项
地址
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