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发明名称
POWIERZCHNIOWE URZADZENIE PODSADZKOWE
摘要
申请公布号
PL107658(B1)
申请公布日期
1980.02.29
申请号
PL19780204302
申请日期
1978.01.28
申请人
发明人
分类号
E21F;E21F15/00;(IPC1-7):E21F15/00
主分类号
E21F
代理机构
代理人
主权项
地址
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