Over-head projector

Details Over-head projector Over-head projector

1990-04-18

1992-10-06

Ansher, Bernard

Photography and optical equipment

Projector or viewer

Overhead or opaque type

Patent

active

D03300404

REFERENCES:
patent: D244602 (1977-06-01), Mango et al.
patent: D317616 (1991-06-01), Shiiba
patent: 4795252 (1989-01-01), Kyhl
patent: 4811110 (1989-03-01), Ohmura et al.
patent: 4938587 (1990-07-01), Namioka et al.
Gallant Inc. Catalog, Apr. 3, 1968 p. 5 (3M Brand Model 88 Projector).

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