Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-11-05
1983-12-20
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02718812
REFERENCES:
patent: D185350 (1959-06-01), Crapsey
patent: D224572 (1972-08-01), Emmerling
patent: D229977 (1974-01-01), Nakanishi
patent: D247041 (1978-01-01), Fukuda
patent: D247852 (1978-05-01), Fukuda
patent: D257983 (1981-01-01), Maitani
Chinon Brochure-7/79-p. 3-Cameras at center and lower left.
Holtje Nelson C.
Ricoh & Company, Ltd.
Shoup Guy W.
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