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发明名称
Construction unit
摘要
申请公布号
US2107240(A)
申请公布日期
1938.02.01
申请号
US19360059437
申请日期
1936.01.16
申请人
I. F. LAUCKS, INC.
发明人
EILERTSEN LEO W.
分类号
E04B2/56
主分类号
E04B2/56
代理机构
代理人
主权项
地址
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