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发明名称
Safety device for ladders
摘要
申请公布号
GB0421034(D0)
申请公布日期
2004.10.20
申请号
GB20040021034
申请日期
2004.09.22
申请人
DUCKER ROBERT
发明人
分类号
主分类号
代理机构
代理人
主权项
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