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发明名称
Electric seismograph
摘要
申请公布号
US2290773(A)
申请公布日期
1942.07.21
申请号
US19400362472
申请日期
1940.10.23
申请人
SOCONY-VACUUM OIL COMPANY, INCORPORATED
发明人
SHOOK EARLEY M.;OLSON ROBERT W.
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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