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发明名称
Seismograph recording apparatus
摘要
申请公布号
US2440970(A)
申请公布日期
1948.05.04
申请号
US19480002530
申请日期
1948.01.15
申请人
GULF RESEARCH & DEVELOPMENT COMPANY
发明人
PALMER ELTON M.
分类号
G01V1/24
主分类号
G01V1/24
代理机构
代理人
主权项
地址
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