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发明名称
Ventillation pipe fan
摘要
申请公布号
PL215403(B1)
申请公布日期
2013.12.31
申请号
PL20080384890
申请日期
2008.04.10
申请人
SIGMA SPOLKA AKCYJNA
发明人
HAJDUK JAN;LISIECKI KRZYSZTOF;SZYSZKA ARTUR
分类号
E21F1/00;F24F7/06
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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