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发明名称
Construction unit
摘要
申请公布号
US1781234(A)
申请公布日期
1930.11.11
申请号
US19290356170
申请日期
1929.04.18
申请人
JONES CHARLES E
发明人
JONES CHARLES E.
分类号
E04C1/39
主分类号
E04C1/39
代理机构
代理人
主权项
地址
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