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发明名称
Adjustable ladder leg
摘要
申请公布号
US2500333(A)
申请公布日期
1950.03.14
申请号
US19460681670
申请日期
1946.07.06
申请人
SCOTT YOUNG WALTER
发明人
YOUNG WALTER SCOTT
分类号
E06C1/20
主分类号
E06C1/20
代理机构
代理人
主权项
地址
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