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发明名称
Manhole cover with ventilation
摘要
申请公布号
EP1486619(A3)
申请公布日期
2006.06.07
申请号
EP20040011607
申请日期
2004.05.15
申请人
GEORG PRINZING GMBH & CO. KG BETONFORMEN- UND MASCHINENFABRIK
发明人
KRAISS, RICHARD
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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