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经营范围
发明名称
Metal door frame
摘要
申请公布号
US2874420(A)
申请公布日期
1959.02.24
申请号
US19550551562
申请日期
1955.12.07
申请人
UNITED STEEL FABRICATORS, INC.
发明人
HENDERSON THOMAS W.
分类号
E06B1/52;E06B3/988
主分类号
E06B1/52
代理机构
代理人
主权项
地址
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