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发明名称
Concrete floor construction
摘要
申请公布号
US2268311(A)
申请公布日期
1941.12.30
申请号
US19390283133
申请日期
1939.07.07
申请人
SHEEHAN WALTER F
发明人
SHEEHAN WALTER F.
分类号
E04B5/29
主分类号
E04B5/29
代理机构
代理人
主权项
地址
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