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经营范围
发明名称
Improvements in or relating to tension spring upholstery and spring mattresses
摘要
申请公布号
GB389191(A)
申请公布日期
1933.03.16
申请号
GB19310033466
申请日期
1931.12.03
申请人
GEORGE MANNING
发明人
分类号
A47C23/05
主分类号
A47C23/05
代理机构
代理人
主权项
地址
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