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发明名称
FRONT-END COAL MINING EQUIPMENT
摘要
申请公布号
RU2003799(C1)
申请公布日期
1993.11.30
申请号
SU19904858428
申请日期
1990.08.08
申请人
VAJGANDT ALEKSANDR ALEKSANDROVICH;VAJGANDT OLEG ALEKSANDROVICH
发明人
VAJGANDT ALEKSANDR A;VAJGANDT OLEG A
分类号
E21C27/00;E21D23/00;(IPC1-7):E21C27/00
主分类号
E21C27/00
代理机构
代理人
主权项
地址
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