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发明名称
IMPROVEMENTS RELATING TO DRUM-TYPE COAL-CUTTING MACHINES
摘要
申请公布号
GB1282234(A)
申请公布日期
1972.07.19
申请号
GB19700056821
申请日期
1970.11.30
申请人
GEBR. EICKHOFF, MASCHINENFABRIK U. EISENGIESSEREIMBH
发明人
分类号
E21C27/02
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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