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发明名称
Apparatus for measuring the time between seismic events with a counter
摘要
申请公布号
US2980884(A)
申请公布日期
1961.04.18
申请号
US19570694033
申请日期
1957.11.01
申请人
GEOPHYSICAL SPECIALTIES COMPANY
发明人
KAASA ROBERT A.
分类号
G01V1/16
主分类号
G01V1/16
代理机构
代理人
主权项
地址
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