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发明名称
MANHOLE COVER.
摘要
申请公布号
EP0433410(B1)
申请公布日期
1993.10.27
申请号
EP19900908928
申请日期
1990.06.18
申请人
VON ROLL AG
发明人
SPIESS, HANSRUEDI;GALVANETTO, FRANCOIS
分类号
E02D29/14;E03F5/06;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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