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发明名称
METHOD OF MANUFACTURE OF LIGHTWEIGHT AGGREGATE
摘要
申请公布号
PL132798(B1)
申请公布日期
1985.04.30
申请号
PL19810229701
申请日期
1981.02.16
申请人
发明人
分类号
C04B;(IPC1-7):C04B31/10
主分类号
C04B
代理机构
代理人
主权项
地址
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