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发明名称
Machines à recouper
摘要
申请公布号
FR1189777(A)
申请公布日期
1959.10.06
申请号
FRD1189777
申请日期
1958.01.14
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
分类号
E21C27/02;E21D9/00
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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