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经营范围
发明名称
SHORTWALL MINING MACHINE
摘要
申请公布号
AU514300(B2)
申请公布日期
1981.02.05
申请号
AU19780033563
申请日期
1978.02.23
申请人
COAL INDUSTRY (PATENTS) LTD.
发明人
R.L.J. MACRAE
分类号
E21C27/34;E21C29/00;E21C35/16;E21C35/22;E21D23/08;(IPC1-7):E21C35/14;E21C35/24;E21F13/10
主分类号
E21C27/34
代理机构
代理人
主权项
地址
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