Folding rear projection slide viewer

Details Folding rear projection slide viewer Folding rear projection slide viewer

1984-09-28

1987-05-12

Zarfas, Louis S.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

Patent

active

D02897695

REFERENCES:
patent: D173647 (1954-12-01), Elle et al.
patent: D213851 (1969-04-01), Karow et al.
patent: D217103 (1970-04-01), Field et al.
patent: D219176 (1970-11-01), Single
patent: D264091 (1982-04-01), Link et al.
patent: D267251 (1982-12-01), Link et al.
patent: D267328 (1982-12-01), Runyan
patent: 3804504 (1974-04-01), Scott

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