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发明名称
Supporting structure
摘要
申请公布号
US1801993(A)
申请公布日期
1931.04.21
申请号
US19290388762
申请日期
1929.08.27
申请人
BECKWITH LOUIS I
发明人
BECKWITH LOUIS I.
分类号
A47B57/56
主分类号
A47B57/56
代理机构
代理人
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地址
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