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经营范围
发明名称
Spring seat
摘要
申请公布号
US2284108(A)
申请公布日期
1942.05.26
申请号
US19390276457
申请日期
1939.05.29
申请人
THOMAS JOSEPH R
发明人
THOMAS JOSEPH R.
分类号
A47C7/28
主分类号
A47C7/28
代理机构
代理人
主权项
地址
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