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发明名称
Bedspring
摘要
申请公布号
US2100393(A)
申请公布日期
1937.11.30
申请号
US19360067833
申请日期
1936.03.09
申请人
NATIONAL STANDARD COMPANY
发明人
HAMILTON LAWRENCE H.
分类号
A47C23/30
主分类号
A47C23/30
代理机构
代理人
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