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发明名称
Bar joist
摘要
申请公布号
US1878281(A)
申请公布日期
1932.09.20
申请号
US19290407310
申请日期
1929.11.15
申请人
INGALLS STEEL PRODUCTS COMPANY
发明人
LUCY THOMAS A.
分类号
E04C3/04;E04C3/08
主分类号
E04C3/04
代理机构
代理人
主权项
地址
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