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经营范围
发明名称
Stepladder
摘要
申请公布号
US2364048(A)
申请公布日期
1944.12.05
申请号
US19430487944
申请日期
1943.05.21
申请人
BARKEY ISAAC S
发明人
BARKEY ISAAC S.
分类号
E06C1/20;E06C7/42
主分类号
E06C1/20
代理机构
代理人
主权项
地址
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