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发明名称
Automatic volume control system for seismograph amplifier system
摘要
申请公布号
US3188575(A)
申请公布日期
1965.06.08
申请号
US19610145036
申请日期
1961.10.16
申请人
WESTERN GEOPHYSICAL COMPANY OF AMERICA
发明人
SHEFFET DAVID
分类号
G01V1/24
主分类号
G01V1/24
代理机构
代理人
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地址
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