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发明名称
Floor slab
摘要
申请公布号
US1929478(A)
申请公布日期
1933.10.10
申请号
US19310523740
申请日期
1931.03.19
申请人
BUNKER HERBERT H
发明人
BUNKER HERBERT H.
分类号
E04C2/42
主分类号
E04C2/42
代理机构
代理人
主权项
地址
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