73244248
Dec 26, 1979
Sep 1, 1981
COLOR VIEWING SYSTEMS, COMPRISING FLUORESCENT LAMPS, COLOR TRANSPARENCY VIEWERS, PROJECTION TRANSPARENCY VIEWERS, COLOR EVALUATION BOOTH, OVERHEAD LIGHTING LUMINARIES, SLIDE SORTING CONSOLES AND TABLES AND SLIDE SORTING OVERLAYS, ELECTRO-OPTICAL INSTRUMENTS-NAMELY, LIGHT INTEGRATORS
Electrical and Scientific Apparatus