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发明名称
Moving-coil system without core for a luxmeter comprising a selenium cell
摘要
申请公布号
US2505265(A)
申请公布日期
1950.04.25
申请号
US19450617868
申请日期
1945.09.21
申请人
HARTFORD NATIONAL BANK & TRUST CO.
发明人
URK AREND THOMAS VAN
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主分类号
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