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发明名称
YIELD UNIT OF DRIFT SUPPORT
摘要
申请公布号
SU1666745(A1)
申请公布日期
1991.07.30
申请号
SU19894676165
申请日期
1989.04.11
申请人
DN GORNYJ I IM.ARTEMA
发明人
ZILBERMAN ANATOLIJ I,SU;GADLIYA ALEKSANDR I,SU;PONOMARENKO PAVEL I,SU;RUDENSKIJ VIKTOR P,SU
分类号
E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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