Slide viewer

Details Slide viewer Slide viewer

1977-12-01

1979-10-02

Burke, Wallace R.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D16 18, D16 17, D1602

Patent

active

D02530589

REFERENCES:
patent: D196155 (1963-08-01), Hoogesteger et al.
patent: D226357 (1973-02-01), Peters
patent: 2617218 (1952-11-01), Antos
patent: 3967401 (1976-07-01), Numbers

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