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经营范围
发明名称
Spandrel truss
摘要
申请公布号
US2000885(A)
申请公布日期
1935.05.07
申请号
US19320607389
申请日期
1932.04.25
申请人
JOHN B. PIERCE FOUNDATION
发明人
DAVISON ROBERT L.
分类号
E04C5/065
主分类号
E04C5/065
代理机构
代理人
主权项
地址
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