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发明名称
Stepladder
摘要
申请公布号
US2325793(A)
申请公布日期
1943.08.03
申请号
US19420430545
申请日期
1942.02.12
申请人
WILLIAM MUMBRAUER
发明人
MUMBRAUER WILLIAM
分类号
E06C1/16;E06C7/18
主分类号
E06C1/16
代理机构
代理人
主权项
地址
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