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发明名称
Stepped reenforced-concrete structure
摘要
申请公布号
US1796306(A)
申请公布日期
1931.03.17
申请号
US19300424186
申请日期
1930.01.29
申请人
JAMES RUDERMAN;JOHN EBERSON
发明人
RUDERMAN JAMES;EBERSON JOHN
分类号
E04H3/12
主分类号
E04H3/12
代理机构
代理人
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地址
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