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发明名称
Improvements in the determination of variations in the horizontal components of the force of gravity
摘要
申请公布号
GB504999(A)
申请公布日期
1939.05.03
申请号
GB19380028808
申请日期
1938.10.04
申请人
BOLIDENS GRUVAKTIEBOLAG
发明人
分类号
G01V7/00
主分类号
G01V7/00
代理机构
代理人
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