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发明名称
Method of burning portland cement clinkers
摘要
申请公布号
US2214345(A)
申请公布日期
1940.09.10
申请号
US19390249947
申请日期
1939.01.09
申请人
PIKE ROBERT D
发明人
PIKE ROBERT D.
分类号
C04B7/44
主分类号
C04B7/44
代理机构
代理人
主权项
地址
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