Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-01-03
1983-05-10
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02689332
REFERENCES:
patent: D190936 (1961-07-01), Clement
patent: D195913 (1963-08-01), Sundberg
patent: D199213 (1964-09-01), Scott
patent: D200984 (1965-04-01), Knowles
patent: D234223 (1975-01-01), McClare
patent: D237652 (1975-11-01), McClare
patent: 3379106 (1968-04-01), Hewes
Canon Kabushiki Kaisha
Holtje Nelson C.
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