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发明名称
WALL COMBINED CUTTER LOADER
摘要
申请公布号
PL262070(A1)
申请公布日期
1988.09.01
申请号
PL19860262070
申请日期
1986.10.27
申请人
发明人
分类号
E21C;E21C31/12;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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