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发明名称
Seismometer
摘要
申请公布号
US2417077(A)
申请公布日期
1947.03.11
申请号
US19420461888
申请日期
1942.10.13
申请人
UNITED GEOPHYSICAL COMPANY, INC.
发明人
JR. HERBERT HOOVER,
分类号
G01V1/18
主分类号
G01V1/18
代理机构
代理人
主权项
地址
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