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发明名称
Dispositif pour effectuer des mesures géophysiques et d'autres mesures
摘要
申请公布号
FR850425(A)
申请公布日期
1939.12.16
申请号
FRD850425
申请日期
1939.02.17
申请人
发明人
MACHTS LUDWIG
分类号
G01R33/02
主分类号
G01R33/02
代理机构
代理人
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地址
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