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发明名称
MEASURING-WHILE-DRILLING SYSTEM HAVING MOTOR SPEED DETECTION DURING ENCODING
摘要
申请公布号
US4103281(A)
申请公布日期
1978.07.25
申请号
US19760727687
申请日期
1976.09.29
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
STROM, GERALD A.;BERNARD, JAMES I.
分类号
E21B47/18;(IPC1-7):G01V1/40
主分类号
E21B47/18
代理机构
代理人
主权项
地址
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