Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-09-26
1985-10-08
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02809060
REFERENCES:
patent: D248957 (1978-08-01), Kitai
patent: D260902 (1981-09-01), Kurozumi
patent: D262118 (1981-12-01), Sinn
patent: D270252 (1983-08-01), Hayashi
patent: 3597074 (1971-08-01), Murgas et al.
patent: 3751158 (1973-08-01), Komori
patent: 4154524 (1979-05-01), Hattori
Office Products-7/78-p. 39-Copiers at top rt.
Holtje Nelson C.
Olympus Optical Company Ltd.
Weinstein Louis
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