Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1975-10-09
1977-04-05
Stearman, Joel
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02439492
REFERENCES:
patent: 3625610 (1971-12-01), Raymond
patent: 3944367 (1976-03-01), Hakanson et al.
patent: D199704 (1964-12-01), Frantz
Eastman Kodak Company
Holmes Paul R.
Rademaker C. A.
Stearman Joel
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