Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-03-04
1978-07-04
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14 48, D1505, D1402
Patent
active
D02484005
REFERENCES:
patent: D209872 (1968-01-01), Plantholt et al.
patent: D236378 (1975-08-01), Yanofsky
patent: 3744790 (1973-07-01), Hoffman
patent: 3774906 (1973-11-01), Fagan et al.
patent: 3944207 (1976-03-01), Bains
Alderson John Charles
Hofland Robert Milton
Lamos Richard Allen
Ansher Bernard
Cockburn Joscelyn G.
International Business Machines - Corporation
Kemper Catherine
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