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发明名称
CASCADING CONVEYORS MOVABLY SUPPORTED FROM MINE ROOF
摘要
申请公布号
AU2340977(A)
申请公布日期
1978.09.21
申请号
AU19770023409
申请日期
1977.03.18
申请人
CONSOLIDATION COAL CO.
发明人
WILL B. JAMISON;DAVID R. HAZEN
分类号
E21F13/02
主分类号
E21F13/02
代理机构
代理人
主权项
地址
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