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发明名称
NUCLEAR WELL LOGGING ELECTRONIC CIRCUIT FOR THE SURFACE CONTROL OF A MOTOR LOCATED IN A LOGGING SONDE BY FREQUENCY SELECTIVE MEANS
摘要
申请公布号
US3548271(A)
申请公布日期
1970.12.15
申请号
USD3548271
申请日期
1968.07.29
申请人
TEXACO INC.
发明人
JOHN G. KAMPFER
分类号
E21B47/12;G01V5/04;G05D3/18;(IPC1-7):H04Q7/02
主分类号
E21B47/12
代理机构
代理人
主权项
地址
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