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发明名称
Foldable ladder
摘要
申请公布号
GB412454(A)
申请公布日期
1934.06.28
申请号
GB19330025890
申请日期
1933.09.19
申请人
KARL SKARSTEIN
发明人
分类号
E06C1/56
主分类号
E06C1/56
代理机构
代理人
主权项
地址
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