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发明名称
摘要
申请公布号
PL228985(A1)
申请公布日期
1982.07.05
申请号
PL19800228985
申请日期
1980.12.31
申请人
ZMECHANIZOWANYCH OBUDOW SCIANO
发明人
DERDA HENRYK;KOSTRZEWA KAZIMIERZ;DREWNIAK ADOLF;ZYCH HENRYK
分类号
E21D;(IPC1-7):E21D/
主分类号
E21D
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