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经营范围
发明名称
Improvements in or relating to gyroscopic compasses
摘要
申请公布号
GB583786(A)
申请公布日期
1946.12.31
申请号
GB19390022612
申请日期
1939.08.04
申请人
SIDNEY GEORGE BROWN
发明人
分类号
G01C19/38
主分类号
G01C19/38
代理机构
代理人
主权项
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