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发明名称
Ladder
摘要
申请公布号
US3026962(A)
申请公布日期
1962.03.27
申请号
US19610093068
申请日期
1961.03.03
申请人
KRAMER NED F
发明人
KRAMER NED F.
分类号
E06C1/12;E06C1/38
主分类号
E06C1/12
代理机构
代理人
主权项
地址
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