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经营范围
发明名称
Roof hatch
摘要
申请公布号
US2766859(A)
申请公布日期
1956.10.16
申请号
US19540403091
申请日期
1954.01.11
申请人
BYRNE DOORS, INC.
发明人
URQUHART THORNTON L.
分类号
E04D13/035;F24F7/02
主分类号
E04D13/035
代理机构
代理人
主权项
地址
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