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发明名称
Portable walker, car seat and high chair combination
摘要
申请公布号
US2731072(A)
申请公布日期
1956.01.17
申请号
US19530360168
申请日期
1953.06.08
申请人
POST DANIEL H
发明人
POST DANIEL H.
分类号
A47D1/00
主分类号
A47D1/00
代理机构
代理人
主权项
地址
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