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发明名称
SEISMIC PULSE GENERATION
摘要
申请公布号
EP0238736(B1)
申请公布日期
1990.04.25
申请号
EP19860302063
申请日期
1986.03.20
申请人
BRITISH GAS CORPORATION
发明人
MELVIN, ALEC
分类号
G01V1/137
主分类号
G01V1/137
代理机构
代理人
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地址
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