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发明名称
Spring construction
摘要
申请公布号
US1846981(A)
申请公布日期
1932.02.23
申请号
US19290335719
申请日期
1929.01.28
申请人
STRUSS HENRY W
发明人
STRUSS HENRY W.
分类号
A47C23/053
主分类号
A47C23/053
代理机构
代理人
主权项
地址
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