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发明名称
DEVICE FOR DETERMINING ZENITH AND SIGHTING ANGLES IN A HOLE
摘要
申请公布号
SU1652523(A1)
申请公布日期
1991.05.30
申请号
SU19894636946
申请日期
1989.01.12
申请人
VNII NEFTEPROMY GEOFIZ
发明人
ROGATYKH NIKOLAJ P,SU;KUKLINA LYUBOV A,SU
分类号
E21B47/0236;G01C9/18
主分类号
E21B47/0236
代理机构
代理人
主权项
地址
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