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发明名称
SLEDGE-MOUNTED COAL PLANER
摘要
申请公布号
PL159990(B1)
申请公布日期
1993.01.29
申请号
PL19890281089
申请日期
1989.08.18
申请人
发明人
分类号
E21C27/32;E21C27/34;(IPC1-7):E21C27/32
主分类号
E21C27/32
代理机构
代理人
主权项
地址
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