Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-07-22
1985-07-30
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02799030
REFERENCES:
patent: D260019 (1981-07-01), Onoue
patent: D270164 (1983-08-01), Sawada
patent: D270540 (1983-09-01), Sakurai
patent: D276347 (1984-11-01), Matsuzaka
patent: 3813157 (1974-05-01), Fantozzi
patent: 4268164 (1981-05-01), Yajima
Fukuda Harumi
Kosako Mikio
Nishibori Hiroshi
Holtje Nelson C.
Sharp Corporation
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