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发明名称
Azimuth directional reference system
摘要
申请公布号
US2988818(A)
申请公布日期
1961.06.20
申请号
US19540402470
申请日期
1954.01.06
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
MADDEN ROBERT W.;LUNDBERG JOHN E.;FOSS FREDERIC A.;MARCY HENRY T.
分类号
G01C19/34
主分类号
G01C19/34
代理机构
代理人
主权项
地址
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