Transparency projector

Photography and optical equipment – Projector or viewer – With provision for transparency magazine

Patent

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Details

D1602

Patent

active

D02562480

REFERENCES:
patent: D228955 (1973-10-01), Mango et al.
patent: D234541 (1975-03-01), Sobotta
patent: D237309 (1975-10-01), Bourke

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