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发明名称
Cold white light
摘要
申请公布号
US1855799(A)
申请公布日期
1932.04.26
申请号
US19250059243
申请日期
1925.09.28
申请人
JOHN C. RISVOLD
发明人
HASSELL FRED
分类号
C09K11/65
主分类号
C09K11/65
代理机构
代理人
主权项
地址
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