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经营范围
发明名称
Adjustable stepladder
摘要
申请公布号
US2006674(A)
申请公布日期
1935.07.02
申请号
US19350003333
申请日期
1935.01.24
申请人
DIVER ARTHUR H
发明人
DIVER ARTHUR H.
分类号
E06C7/44
主分类号
E06C7/44
代理机构
代理人
主权项
地址
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