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经营范围
发明名称
Extensible seat for chairs
摘要
申请公布号
US2593750(A)
申请公布日期
1952.04.22
申请号
US19470749150
申请日期
1947.05.20
申请人
MEYER GREITZER
发明人
GREITZER MEYER
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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