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经营范围
发明名称
Improvements in or relating to sofa bed constructions
摘要
申请公布号
GB626411(A)
申请公布日期
1949.07.14
申请号
GB19470016507
申请日期
1947.06.23
申请人
THE SENG COMPANY
发明人
分类号
A47C17/13
主分类号
A47C17/13
代理机构
代理人
主权项
地址
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