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发明名称
LOADER IN PARTICULAR FOR DOUBLE-ARM LONGWALL MECHANICAL COAL MINER
摘要
申请公布号
PL141992(B1)
申请公布日期
1987.09.30
申请号
PL19840250348
申请日期
1984.11.08
申请人
发明人
分类号
E21C;E21C35/20;E21F13/06;(IPC1-7):E21C35/20
主分类号
E21C
代理机构
代理人
主权项
地址
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