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发明名称
Building material and method of making the same
摘要
申请公布号
US1896689(A)
申请公布日期
1933.02.07
申请号
US19320594688
申请日期
1932.02.23
申请人
THE UPSON COMPANY
发明人
SPENCER HUGH M.
分类号
C04B28/26
主分类号
C04B28/26
代理机构
代理人
主权项
地址
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