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发明名称
Ladder safety device or the like
摘要
申请公布号
GB9706392(D0)
申请公布日期
1997.05.14
申请号
GB19970006392
申请日期
1997.03.27
申请人
DOVE, JOHN J
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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