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发明名称
EXPANDING PERLITE
摘要
申请公布号
GB2033375(A)
申请公布日期
1980.05.21
申请号
GB19790035873
申请日期
1979.10.16
申请人
JOHNS-MANVILLE CORP
发明人
分类号
C04B20/06;F27B15/00;(IPC1-7):C03C11/00
主分类号
C04B20/06
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代理人
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