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经营范围
发明名称
COAL-MINING UNIT
摘要
申请公布号
SU962640(A1)
申请公布日期
1982.09.30
申请号
SU19813261763
申请日期
1981.03.16
申请人
INST GORNOGO DELA AN KAZSSR
发明人
ZHIKHOR EVGENIJ A,SU;ERSHOV YURIJ I,SU;ROGOV EVGENIJ I,SU
分类号
E21D23/00;(IPC1-7):E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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