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发明名称
Easel
摘要
申请公布号
US1809268(A)
申请公布日期
1931.06.09
申请号
US19290393535
申请日期
1929.09.18
申请人
JEAN DUMAS
发明人
DUMAS JEAN
分类号
A47B97/04
主分类号
A47B97/04
代理机构
代理人
主权项
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