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发明名称
Process of producing lightweight aggregates
摘要
申请公布号
US2478757(A)
申请公布日期
1949.08.09
申请号
US19440544084
申请日期
1944.07.08
申请人
NORTH AMERICAN CEMENT CORPORATION
发明人
FOSTER HARRY D.
分类号
C04B20/06
主分类号
C04B20/06
代理机构
代理人
主权项
地址
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