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经营范围
发明名称
Stepladder
摘要
申请公布号
US2604251(A)
申请公布日期
1952.07.22
申请号
US19470774979
申请日期
1947.09.19
申请人
GAUGHAN ANTHONY F
发明人
GAUGHAN ANTHONY F.
分类号
E06C1/28
主分类号
E06C1/28
代理机构
代理人
主权项
地址
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