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发明名称
Extension stepladder
摘要
申请公布号
US1999017(A)
申请公布日期
1935.04.23
申请号
US19340749242
申请日期
1934.10.20
申请人
GANTESKI JOSEPH J
发明人
GANTESKI JOSEPH J.
分类号
E06C1/22
主分类号
E06C1/22
代理机构
代理人
主权项
地址
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