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经营范围
发明名称
Process for burning cement and similar raw material
摘要
申请公布号
US2143905(A)
申请公布日期
1939.01.17
申请号
US19380216895
申请日期
1938.07.01
申请人
F. L. SMIDTH & CO.
发明人
AHLMANN NIKOLAI
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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