Color mixing head for a photographic enlarging apparatus

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

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D1604

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D02434520

REFERENCES:
patent: 3818216 (1974-06-01), Larraburu
Nikon Catalog, 5-1972, p. 21, Power Supply Box MA-1.
Omega Catalog, 9-1970, p. 2, Omega Enlarger Head.
British Journal of Photography, 2-1975, p. i, Durst CLS 450 head.

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