Collapsible photographic slide viewer

Details Collapsible photographic slide viewer Collapsible photographic slide viewer

1978-11-29

1981-01-06

Pitrelli, John F.

Card, picture, or sign exhibiting

Photographic transparency viewer, e.g., x-ray viewer

Hand held slide viewer

40365, G09F 1300

Patent

active

042428181

ABSTRACT:
A collapsible optical viewer is comprised of a front wall having a light-admitting opening therein; a rear wall assembly having a coincident viewing aperture therein; top and bottom walls contiguous with the front and rear walls; and, side walls, one of which includes a continuous extension for forming a channel proximate the front wall whereby a photographic film strip may be received therein. A blank suitable for assembling the viewer is also described.

REFERENCES:
patent: 2543240 (1951-02-01), Hutchinson
patent: 2768554 (1956-10-01), Leslie
patent: 2789460 (1957-04-01), Kaufman

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