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经营范围
发明名称
Adjustable stepladder
摘要
申请公布号
US3268031(A)
申请公布日期
1966.08.23
申请号
US19640398163
申请日期
1964.09.22
申请人
HAMPSON JAMES L
发明人
HAMPSON JAMES L.
分类号
E06C1/38
主分类号
E06C1/38
代理机构
代理人
主权项
地址
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