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发明名称
SPOSOB ODWADNIANIA PODZIEMNYCH WYROBISK
摘要
申请公布号
PL96094(B1)
申请公布日期
1977.12.31
申请号
PL19740180821
申请日期
1974.02.22
申请人
发明人
分类号
E21F3/00
主分类号
E21F3/00
代理机构
代理人
主权项
地址
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