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发明名称
IMPROVEMENTS IN OR RELATING TO MAGNETIC COMPASSES
摘要
申请公布号
IE46532(B1)
申请公布日期
1983.07.13
申请号
IE19780000715
申请日期
1978.04.12
申请人
HENNESSY JOHN BRIAN
发明人
分类号
G01C17/04;G01C17/08;(IPC1-7):G01C17/06
主分类号
G01C17/04
代理机构
代理人
主权项
地址
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