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发明名称
Construction of hollow articles in reinforced concrete
摘要
申请公布号
US2427604(A)
申请公布日期
1947.09.16
申请号
US19430494367
申请日期
1943.07.12
申请人
ALFRED HOLTER
发明人
HOLTER ALFRED
分类号
B63B3/04;B63B5/16;B63B9/06
主分类号
B63B3/04
代理机构
代理人
主权项
地址
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