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发明名称
Improvements in or relating to coal and like cutting machines
摘要
申请公布号
GB422594(A)
申请公布日期
1935.01.15
申请号
GB19340000141
申请日期
1934.01.02
申请人
AUSTIN HOPKINSON
发明人
分类号
E21C35/19
主分类号
E21C35/19
代理机构
代理人
主权项
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