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发明名称
Baby walker
摘要
申请公布号
US2538324(A)
申请公布日期
1951.01.16
申请号
US19490082715
申请日期
1949.03.22
申请人
PETRIE ARTHUR J
发明人
PETRIE ARTHUR J.
分类号
A47D13/04
主分类号
A47D13/04
代理机构
代理人
主权项
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