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发明名称
Building unit
摘要
申请公布号
US2211521(A)
申请公布日期
1940.08.13
申请号
US19390266880
申请日期
1939.04.08
申请人
SPAULDING WELLINGTON H
发明人
SPAULDING WELLINGTON H.
分类号
E04B2/04
主分类号
E04B2/04
代理机构
代理人
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