Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-09-26
1979-08-14
Lucas, Susan J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02526328
REFERENCES:
patent: 2294527 (1942-09-01), Weiss
patent: 2380297 (1945-07-01), Dibert
Harness J. King
Lucas Susan J.
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