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发明名称
摘要
申请公布号
DE2448573(B2)
申请公布日期
1978.09.28
申请号
DE19742448573
申请日期
1974.10.11
申请人
NIPPON KOGAKU K.K., TOKIO
发明人
MAIDA, OSAMU, TOKIO
分类号
G03B17/38;G03B17/42;G03B19/18;(IPC1-7):G03B17/38
主分类号
G03B17/38
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