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发明名称
MANHOLE COVER
摘要
申请公布号
EP0362862(A3)
申请公布日期
1990.10.31
申请号
EP19890118535
申请日期
1989.10.06
申请人
PASSAVANT-WERKE AG
发明人
WEISS, BERNHARD
分类号
E02D29/12;E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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