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发明名称
A measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers
摘要
申请公布号
GB9714695(D0)
申请公布日期
1997.09.17
申请号
GB19970014695
申请日期
1996.01.16
申请人
BAKER HUGHES INC
发明人
分类号
E21B44/00;G01V1/52
主分类号
E21B44/00
代理机构
代理人
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