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经营范围
发明名称
Window ventilator
摘要
申请公布号
US1916355(A)
申请公布日期
1933.07.04
申请号
US19290360331
申请日期
1929.05.04
申请人
发明人
分类号
E06B7/02
主分类号
E06B7/02
代理机构
代理人
主权项
地址
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