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发明名称
Magnetic compass
摘要
申请公布号
US2168112(A)
申请公布日期
1939.08.01
申请号
US19370123045
申请日期
1937.01.29
申请人
VICTOR BENARD JACQUES ALFRED
发明人
BENARD JACQUES ALFRED VICTOR
分类号
G01C17/38
主分类号
G01C17/38
代理机构
代理人
主权项
地址
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