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经营范围
发明名称
Measurement of gravitational forces
摘要
申请公布号
US1951226(A)
申请公布日期
1934.03.13
申请号
US19300477966
申请日期
1930.08.26
申请人
IRVING WOLD PETER
发明人
WOLD PETER IRVING
分类号
G01V7/12
主分类号
G01V7/12
代理机构
代理人
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