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经营范围
发明名称
POWER ROOF SUPPORT UNIT
摘要
申请公布号
SU848680(A2)
申请公布日期
1981.07.23
申请号
SU19792827613
申请日期
1979.10.10
申请人
DO NI UGOLNYJ INSTITUT
发明人
AVERKIEV VASILIJ I,SU;BATYGIN STANISLAV P,SU
分类号
E21D23/18;(IPC1-7):E21D23/18
主分类号
E21D23/18
代理机构
代理人
主权项
地址
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