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发明名称
摘要
申请公布号
DE2024803(A1)
申请公布日期
1970.12.10
申请号
DE19702024803
申请日期
1970.05.21
申请人
发明人
分类号
C03C3/247;(IPC1-7):C03C3/00
主分类号
C03C3/247
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代理人
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地址
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