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发明名称
Method of reenforcing beams
摘要
申请公布号
US1989834(A)
申请公布日期
1935.02.05
申请号
US19310577291
申请日期
1931.11.25
申请人
WATSON CHARLES G
发明人
WATSON CHARLES G.
分类号
E04C3/04;E04C3/07
主分类号
E04C3/04
代理机构
代理人
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