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经营范围
发明名称
SECTION OF POWERED SUPPORT
摘要
申请公布号
SU1684514(A1)
申请公布日期
1991.10.15
申请号
SU19884426867
申请日期
1988.05.13
申请人
PODMOSKOVNYJ NI PK UGOLNYJ INSTITUT
发明人
CHUJKO IVAN N,SU;SIROTIN YURIJ G,SU
分类号
E21D23/03;E21D23/04
主分类号
E21D23/03
代理机构
代理人
主权项
地址
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