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摘要
申请公布号
DE2724507(B2)
申请公布日期
1980.03.06
申请号
DE19772724507
申请日期
1977.05.31
申请人
NIPPON KOGAKU K.K., TOKIO
发明人
IIZUKA, YUTAKA, TOKIO
分类号
G02B15/167;G02B15/173;(IPC1-7):G02B5/16
主分类号
G02B15/167
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代理人
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