Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-11-19
1984-02-28
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02728290
REFERENCES:
patent: D223124 (1972-03-01), Takata
patent: D263310 (1982-03-01), Kato
patent: D267955 (1983-02-01), Kato
patent: 3451322 (1969-06-01), Noda
patent: 4179206 (1979-12-01), Tezuka
patent: 4331405 (1982-05-01), Yamamoto
Photography-9/82-p. 49-Ricoh Cameras at top.
Chinon CE-4 Memotron Flyer-7/79-Camera on cover.
Holtje Nelson C.
Ricoh & Company, Ltd.
Shoup Guy W.
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