Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1986-02-05
1988-11-01
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02983370
REFERENCES:
patent: D238658 (1976-02-01), Stone
patent: D245761 (1977-09-01), Alseth
patent: D277289 (1985-01-01), Sabin
patent: D278539 (1985-04-01), Josephson
patent: D289300 (1987-04-01), Saito
patent: 3999654 (1976-12-01), Pollack
patent: 4456154 (1984-06-01), Herriman
patent: 4573614 (1986-03-01), Ozawa
patent: 4589579 (1986-05-01), Morita
Holtje Nelson C.
Mita Industrial Co. Ltd.
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