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发明名称
Spring assembly units
摘要
申请公布号
US2726409(A)
申请公布日期
1955.12.13
申请号
US19510247818
申请日期
1951.09.22
申请人
NACHMAN CORPORATION
发明人
BELLGRAN GEORGE R.
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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