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发明名称
Interlocking i-beam for roof and side wall structure
摘要
申请公布号
US2981383(A)
申请公布日期
1961.04.25
申请号
US19600031114
申请日期
1960.05.23
申请人
DUNN HAROLD S
发明人
DUNN HAROLD S.
分类号
E04B1/24;E04B5/14;E04C3/04;E04C3/06;E04C3/32;E06B9/52
主分类号
E04B1/24
代理机构
代理人
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