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发明名称
METHOD OF SAFEGURADING VERTICAL SHAFTS
摘要
申请公布号
SU1562451(A1)
申请公布日期
1990.05.07
申请号
SU19884369846
申请日期
1988.01.20
申请人
VNII GORNOJ GEOMEKHANIKI MARK
发明人
BORISOVETS VLADIMIR A,SU;BASINSKIJ YURIJ M,SU;MOROZOV MIKHAIL P,SU;PETUKHOV IGOR A,SU;IVANOV EVGENIJ A,SU
分类号
E21C41/16;E21C41/18
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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