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发明名称
Cushion spring and method of making the same
摘要
申请公布号
US2439530(A)
申请公布日期
1948.04.13
申请号
US19440541489
申请日期
1944.06.22
申请人
TEA CLARK A
发明人
TEA CLARK A.
分类号
A47C27/06
主分类号
A47C27/06
代理机构
代理人
主权项
地址
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