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发明名称
Improvements in the lighting of ships' compasses
摘要
申请公布号
GB366677(A)
申请公布日期
1932.02.11
申请号
GB19310000144
申请日期
1931.01.02
申请人
JOHN WILSON GILLIE
发明人
分类号
G01C17/24
主分类号
G01C17/24
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代理人
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