发明名称 Rechargeable transparent slide viewer apparatus
摘要 Apparatus for viewing a transparency includes a rechargeable battery and a telescoping lens housing which moves inwardly and outwardly with respect to a housing in which is disposed the rechargeable battery, a light source, and a solid diffuser/reflector block for diffusing and reflecting light from the light source over substantially the entire area of the transparency.
申请公布号 US4372068(A) 申请公布日期 1983.02.08
申请号 US19800174737 申请日期 1980.08.04
申请人 MAJOR, FREDERICK A. 发明人 KNAPP, PAUL A.;MAJOR, FREDERICK A.
分类号 G02B25/02;(IPC1-7):G02B27/02;G02B27/04;G03B21/20;G02B7/02 主分类号 G02B25/02
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