Slide viewer

Details Slide viewer Slide viewer

1982-07-20

1984-11-06

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

Patent

active

D02762404

REFERENCES:
patent: D211135 (1968-05-01), Tan
patent: D268591 (1983-04-01), Miller
patent: D268681 (1983-04-01), Hanke
patent: 3018575 (1962-01-01), Barre
Ritz Camera "Photo Guide"-Winter 1962-1963-p. 23-Airquipt Slide Viewers at center right.

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