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发明名称
Construction unit
摘要
申请公布号
US2256435(A)
申请公布日期
1941.09.16
申请号
US19390305687
申请日期
1939.11.22
申请人
KRAUS CLARENCE W
发明人
KRAUS CLARENCE W.
分类号
E04D1/26
主分类号
E04D1/26
代理机构
代理人
主权项
地址
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