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经营范围
发明名称
Improvements in or relating to gyroscopic apparatus for defining the vertical
摘要
申请公布号
GB639803(A)
申请公布日期
1950.07.05
申请号
GB19470025649
申请日期
1947.09.20
申请人
THE MINISTER OF SUPPLY
发明人
BARNES JEFFERY WALTON
分类号
G01C19/44
主分类号
G01C19/44
代理机构
代理人
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地址
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