Display accessory for overhead projector system

Photography and optical equipment – Projector or viewer – Element or attachment

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Details

D16235, 1602

Patent

active

D03793621

REFERENCES:
patent: D273959 (1984-05-01), Vandyken, Jr.
patent: D321361 (1991-11-01), Iino
patent: 3281977 (1966-11-01), Koontz
patent: 3537792 (1970-11-01), Furniss et al.
patent: 4632529 (1986-12-01), Levin
"LCD Panels for Computer/Overhead Display", The Equipment Directory of Video, Computer and Audio-Visual Products, 37th Edition, 1991-92 Catalog page on Transparency, Filmstrip Materials.

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