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发明名称
Leveling device
摘要
申请公布号
US2566481(A)
申请公布日期
1951.09.04
申请号
US19470745456
申请日期
1947.05.02
申请人
BUELL ALBERT H
发明人
BUELL ALBERT H.
分类号
E04F21/24
主分类号
E04F21/24
代理机构
代理人
主权项
地址
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