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发明名称
摘要
申请公布号
CH597631(A5)
申请公布日期
1978.04.14
申请号
CH19760000350
申请日期
1976.01.13
申请人
RITZERFELD, GERHARD
发明人
GERHARD RITZERFELD
分类号
G03B27/62;G03G15/04;G03G15/22;(IPC1-7):G03G15/00
主分类号
G03B27/62
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