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经营范围
发明名称
Flat truss
摘要
申请公布号
US2902951(A)
申请公布日期
1959.09.08
申请号
US19530369754
申请日期
1953.07.23
申请人
HENRY MAAG JOHN
发明人
MAAG JOHN HENRY
分类号
E04C3/292
主分类号
E04C3/292
代理机构
代理人
主权项
地址
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