Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1985-10-17
1988-01-19
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14110
Patent
active
D02938006
REFERENCES:
patent: D271882 (1983-12-01), Du Bois
patent: D280635 (1985-09-01), Saito
patent: D280636 (1985-09-01), Hara
patent: D286409 (1986-10-01), Kosako
patent: 4332377 (1982-06-01), Du Bois
patent: 4361321 (1982-11-01), Holliday
patent: 4470356 (1984-09-01), Davis
patent: 4548403 (1985-10-01), Matsui
Holtje Nelson C.
Ricoh & Company, Ltd.
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