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发明名称
Improvements relating to the treatment of concrete
摘要
申请公布号
GB611585(A)
申请公布日期
1948.11.01
申请号
GB19460013621
申请日期
1946.05.06
申请人
KURT BILLIG
发明人
分类号
E04G21/06
主分类号
E04G21/06
代理机构
代理人
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