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发明名称
Device for recording dips in formation of well bores
摘要
申请公布号
US1841790(A)
申请公布日期
1932.01.19
申请号
US19290409279
申请日期
1929.11.23
申请人
CULBERTSON RICHARD B
发明人
CULBERTSON RICHARD B.
分类号
E21B25/16
主分类号
E21B25/16
代理机构
代理人
主权项
地址
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