Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1984-11-16
1986-12-02
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02870223
REFERENCES:
patent: D267802 (1983-02-01), Yasutani
patent: D270540 (1983-09-01), Sakurai
patent: D270541 (1983-09-01), Matsuzaka
patent: D280104 (1985-08-01), Sutoh
patent: D280634 (1985-09-01), Imada
The Office-5/83-p. 143-Copiers at top.
Holtje Nelson C.
Sanyo Electric Co,. Ltd.
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