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发明名称
SYNCHRONIZATION OF CURRENT SUPPLY FREQUENCY
摘要
申请公布号
GB8417343(D0)
申请公布日期
1984.08.08
申请号
GB19840017343
申请日期
1984.07.06
申请人
GEOPHYSICAL CO OF NORWAY AS
发明人
分类号
G01V1/20;(IPC1-7):G01V/
主分类号
G01V1/20
代理机构
代理人
主权项
地址
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