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经营范围
发明名称
Building ventilator
摘要
申请公布号
US2665626(A)
申请公布日期
1954.01.12
申请号
US19500171392
申请日期
1950.06.30
申请人
JONES ALEXANDER H
发明人
JONES ALEXANDER H.
分类号
E04D13/03;E04D13/035
主分类号
E04D13/03
代理机构
代理人
主权项
地址
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