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发明名称
INSTRUMENT FOR CONTROL AND DETERMINATION OF RECTILINEARITY AS WELL AS INCLINATIONS OF MINING EXCAVATIONS
摘要
申请公布号
PL113234(B1)
申请公布日期
1980.11.29
申请号
PL19770203170
申请日期
1977.12.19
申请人
发明人
分类号
G01C;G01C9/00;(IPC1-7):G01C9/00
主分类号
G01C
代理机构
代理人
主权项
地址
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