Fred E. Altman — Lens Patent Author | Surface & Stop

Fred E. Altman2 related patents across 2 interactive lens diagrams.
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Eastman Kodak Company (2)
Eastman Kodak Company(2)US 2,165,328↗1939Assignee: Eastman Kodak Company
Inventors: George H. Aklin, Fred E. Altman
Figure 2KODAK EKTAR 50mm f/3.5— 4 ELEMENTS / 3 GROUPS, 51.60 mm DESIGN / 50 mm MARKETED
US 2,279,384↗1942Assignee: Eastman Kodak Company
Inventors: Fred E. Altman
Example 6KODAK ENLARGING EKTAR 100mm f/4.5— 5 ELEMENTS / 3 GROUPS, f ≈ 100.36 mm