Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-01-29
1981-09-15
Caun, Peter M.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02607735
REFERENCES:
patent: D128121 (1941-07-01), Leonard
patent: 2069186 (1937-01-01), Hineline
patent: 3044351 (1962-07-01), Patterson
patent: 3531197 (1970-09-01), King
patent: 4095246 (1978-06-01), Kellner
Caun Peter M.
Durst A.G. Fabrik Fototechnischer Apparate
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