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发明名称
摘要
申请公布号
DE2034381(A1)
申请公布日期
1971.01.28
申请号
DE19702034381
申请日期
1970.07.10
申请人
发明人
分类号
C03C21/00;(IPC1-7):C03C21/00
主分类号
C03C21/00
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