Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-06-12
1982-04-06
Caun, Peter M.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02637200
REFERENCES:
patent: D241273 (1976-08-01), Okuno et al.
patent: 3167256 (1965-01-01), Elliott
patent: 4078240 (1978-03-01), Kaneko et al.
patent: 4190880 (1980-02-01), Esaki
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