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经营范围
发明名称
DEVICE FOR MINE STEEL-ARCH SUPPORT'S HEADS LIFTING
摘要
申请公布号
CS8804484(A1)
申请公布日期
1989.09.12
申请号
CS19880004484
申请日期
1988.06.27
申请人
STEPANEK JAN,CS;PACL VACLAV,CS
发明人
STEPANEK JAN,CS;PACL VACLAV,CS
分类号
E21D13/04;(IPC1-7):E21D13/04
主分类号
E21D13/04
代理机构
代理人
主权项
地址
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