Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-01-19
1983-02-15
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 42, D1601
Patent
active
D02679540
REFERENCES:
patent: D183670 (1958-10-01), Zagara
patent: D191235 (1961-08-01), Hennig
patent: D263240 (1982-03-01), Schultes
patent: 2936685 (1960-05-01), O'Brien
patent: 3169708 (1965-02-01), D'Incerti
patent: 4130355 (1978-12-01), Ohtaki
patent: 4231645 (1980-11-01), Davis
patent: 4319818 (1982-03-01), Sawara
Fuji Koeki Corporation
Holtje Nelson C.
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