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发明名称
Compass unit
摘要
申请公布号
US2364908(A)
申请公布日期
1944.12.12
申请号
US19420433545
申请日期
1942.03.06
申请人
EASTMAN OIL WELL SURVEY COMPANY;EASTMAN OIL WELL SURVEY CORPORATION
发明人
MILLER LEONIDAS C.
分类号
G01C17/26
主分类号
G01C17/26
代理机构
代理人
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地址
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