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发明名称
Ladder jack
摘要
申请公布号
US2578862(A)
申请公布日期
1951.12.18
申请号
US19470767557
申请日期
1947.08.08
申请人
TIMS TONY C
发明人
TIMS TONY C.
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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