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经营范围
发明名称
COAL PLOUGH
摘要
申请公布号
SU1710730(A1)
申请公布日期
1992.02.07
申请号
SU19904784239
申请日期
1990.01.16
申请人
SHAKHTINSKI NI PK UGOLNY INST
发明人
AVERKIN ALEKSANDR N,SU;BONDARENKO OLEG A,SU
分类号
E21C27/32
主分类号
E21C27/32
代理机构
代理人
主权项
地址
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