Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-10-26
1979-11-20
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02534754
REFERENCES:
patent: D243007 (1977-01-01), Uellenberg
Hamm Heinz
Kramer Jochen
Mankau Dieter
Papke Friedrich
Schonfeld Hans
Ansher Bernard
Kemper Catherine
Rollei-Werke Franke & Heidecke
Shepard Charles
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