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经营范围
发明名称
APPARATUS FOR MECHANICALLY MINING COAL LONGWALLS
摘要
申请公布号
PL130830(B1)
申请公布日期
1984.09.29
申请号
PL19810232394
申请日期
1981.07.27
申请人
发明人
分类号
B65G19/04;E21C;E21C35/12;(IPC1-7):E21C35/12
主分类号
B65G19/04
代理机构
代理人
主权项
地址
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