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经营范围
发明名称
Building elements and building structure
摘要
申请公布号
US2681714(A)
申请公布日期
1954.06.22
申请号
US19470767713
申请日期
1947.08.09
申请人
HENRY CASSON ERNEST
发明人
CASSON ERNEST HENRY
分类号
E04B1/18
主分类号
E04B1/18
代理机构
代理人
主权项
地址
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