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经营范围
发明名称
Window ventilator
摘要
申请公布号
US2014974(A)
申请公布日期
1935.09.17
申请号
US19340747908
申请日期
1934.10.11
申请人
PORTER SCREEN COMPANY
发明人
MAYNARD WILLIAM H.
分类号
E06B7/26
主分类号
E06B7/26
代理机构
代理人
主权项
地址
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