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经营范围
发明名称
ISOLANT A BASE DE PERLITE
摘要
申请公布号
BE873974(A1)
申请公布日期
1979.05.29
申请号
BE19790193305
申请日期
1979.02.06
申请人
GREFCO INC.
发明人
分类号
C04B20/10;C04B20/12;C04B30/00;(IPC1-7):C04B/
主分类号
C04B20/10
代理机构
代理人
主权项
地址
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