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发明名称
Improvements in the manufacture of portland cement
摘要
申请公布号
GB423043(A)
申请公布日期
1935.01.24
申请号
GB19330020833
申请日期
1933.07.24
申请人
CARL PONTOPPIDAN
发明人
分类号
C04B7/40
主分类号
C04B7/40
代理机构
代理人
主权项
地址
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