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发明名称
A safety device for the bottom of ladders
摘要
申请公布号
GB0300961(D0)
申请公布日期
2003.02.12
申请号
GB20030000961
申请日期
2003.01.16
申请人
RODGERS, JOHN H
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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