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发明名称
POSITIONING TRANSDUCERS IN BOREHOLES
摘要
申请公布号
GB8907178(D0)
申请公布日期
1989.05.10
申请号
GB19890007178
申请日期
1989.03.30
申请人
NATURAL ENVIRONMENT RESEARCH COUNCIL
发明人
分类号
G01V1/157;G01V11/00
主分类号
G01V1/157
代理机构
代理人
主权项
地址
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