Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1978-06-26
1980-10-21
Lucas, Susan J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02574373
REFERENCES:
patent: D201918 (1965-08-01), Nadel
patent: 1968193 (1934-07-01), Einson
patent: 2225625 (1940-12-01), Ehrlich
Klotz Addie L.
Wittke Kurt W.
Lucas Susan J.
Schroeder Robert A.
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