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发明名称
Seismograph
摘要
申请公布号
US2062784(A)
申请公布日期
1936.12.01
申请号
US19320603148
申请日期
1932.04.04
申请人
GREEN WILLIAM G
发明人
GREEN WILLIAM G.
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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