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发明名称
WINDING GEAR FOR INSPECTION AND REPAIRS OF MINE SHAFT LINING
摘要
申请公布号
PL147439(B1)
申请公布日期
1989.06.30
申请号
PL19850254071
申请日期
1985.06.19
申请人
发明人
分类号
E21D;E21D5/12;E21D7/02;(IPC1-7):E21D5/12
主分类号
E21D
代理机构
代理人
主权项
地址
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