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发明名称
Improvements relating to spring mattresses
摘要
申请公布号
GB356381(A)
申请公布日期
1931.09.10
申请号
GB19300021313
申请日期
1930.07.14
申请人
ARTHUR MARSDEN;GEORGE RUSSELL MARSDEN
发明人
分类号
A47C20/04
主分类号
A47C20/04
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代理人
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