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经营范围
发明名称
Improvements in concrete and hydraulic cement
摘要
申请公布号
GB431679(A)
申请公布日期
1935.07.08
申请号
GB19330030948
申请日期
1933.11.07
申请人
DEWEY & ALMY, LIMITED
发明人
分类号
C04B24/22
主分类号
C04B24/22
代理机构
代理人
主权项
地址
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