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发明名称
FILLING MIXTURE FOR FILLING MINED OUT SPACE OR FOR PRODUCING AN ARTIFICIAL ROOF
摘要
申请公布号
PL143339(B1)
申请公布日期
1988.02.29
申请号
PL19850251909
申请日期
1985.02.12
申请人
发明人
分类号
E21F;E21F15/06;(IPC1-7):E21F15/06
主分类号
E21F
代理机构
代理人
主权项
地址
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