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经营范围
发明名称
Seismograph prospecting apparatus
摘要
申请公布号
US2263519(A)
申请公布日期
1941.11.18
申请号
US19380243679
申请日期
1938.12.02
申请人
GULF RESEARCH & DEVELOPMENT COMPANY
发明人
RITZMANN OTTO F.
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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