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发明名称
Apparatus for recording seismic waves
摘要
申请公布号
US2374204(A)
申请公布日期
1945.04.24
申请号
US19390286172
申请日期
1939.07.24
申请人
UNITED GEOPHYNICAL COMPANY
发明人
JR. HERBERT HOOVER,
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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