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发明名称
Ladder jack
摘要
申请公布号
US2548380(A)
申请公布日期
1951.04.10
申请号
US19480021991
申请日期
1948.04.19
申请人
LATHAM OREL J
发明人
LATHAM OREL J.
分类号
E06C7/16
主分类号
E06C7/16
代理机构
代理人
主权项
地址
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