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发明名称
APPARATUS FOR MEASUREMENT OF DISPLACEMENTS OF OBSERVATION POINTS
摘要
申请公布号
PL130100(B2)
申请公布日期
1984.07.31
申请号
PL19820235253
申请日期
1982.02.24
申请人
发明人
分类号
E21F17/18;G01B;G01C15/06;(IPC1-7):G01C15/06
主分类号
E21F17/18
代理机构
代理人
主权项
地址
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