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发明名称
An extension ladder with improved mechanism
摘要
申请公布号
KR20090008489(U)
申请公布日期
2009.08.24
申请号
KR20080002211U
申请日期
2008.02.19
申请人
发明人
分类号
E06C1/12;E06C1/22;E06C1/32;E06C7/00
主分类号
E06C1/12
代理机构
代理人
主权项
地址
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