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发明名称
Ram for the mechanical winning of coal or other minerals
摘要
申请公布号
GB909068(A)
申请公布日期
1962.10.24
申请号
GB19610029661
申请日期
1961.08.17
申请人
BAYERISCHE BERG-, HUTTEN- UND SALZWERKE AKTIENGESELLSCHAFT
发明人
分类号
E21C27/46
主分类号
E21C27/46
代理机构
代理人
主权项
地址
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