Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1975-05-15
1977-04-12
Stearman, Joel
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1699
Patent
active
D02440229
REFERENCES:
patent: 3762293 (1973-10-01), Moodie
patent: 3800312 (1974-03-01), Brandt
patent: 3821771 (1974-06-01), Johnson et al.
International Telephone and Telegraph Corporation
Rademaker C.
Remsen, Jr. C. Cornell
Stearman Joel
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