Foldable advertisement slide projector

Details Foldable advertisement slide projector Foldable advertisement slide projector

1989-07-07

1991-11-05

Ansher, Bernard

Photography and optical equipment

Projector or viewer

Integrated unit

Patent

active

D03213609

REFERENCES:
patent: D289769 (1987-05-01), Geissler
patent: 4144661 (1979-03-01), Gosanko et al.
patent: 4337590 (1982-07-01), Jackson
patent: 4384416 (1983-05-01), Kanzelberger
patent: 4496127 (1985-01-01), Nelson

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