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发明名称
COAL CUTTING MACHINE WITH CUTTING ROLLERS EQUIPPED WITH TILTABLE ARMS
摘要
申请公布号
US3456984(A)
申请公布日期
1969.07.22
申请号
US19680695148
申请日期
1968.01.02
申请人
GEBR. EICKHOFF
发明人
WILLY LANFERMANN
分类号
E21C25/08;(IPC1-7):E21C1/02;E21C13/01
主分类号
E21C25/08
代理机构
代理人
主权项
地址
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