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经营范围
发明名称
Well surveying apparatus
摘要
申请公布号
US2843941(A)
申请公布日期
1958.07.22
申请号
US19540465281
申请日期
1954.10.28
申请人
V. E. KUSTER
发明人
STORY JAMES K.
分类号
E21B47/022
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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