Filmstrip viewer

Details Filmstrip viewer Filmstrip viewer

1980-03-17

1982-05-25

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1602

Patent

active

D02645971

REFERENCES:
patent: D180369 (1957-05-01), Katz
patent: D253058 (1979-10-01), Antos
patent: D254010 (1980-01-01), Elsner
patent: D255581 (1980-06-01), Owens
patent: 1964879 (1934-07-01), Jelinek
patent: 3306697 (1967-02-01), Nemeth
Industrial Design-3/60-p. 69-Hand Switch at bottom-right.

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