Letter from Lee de Forest to Arnold O. Beckman
- 1952-Nov-19
This letter suggests Beckman might be interested in commercial development of de Forest's new invention, a "sandwich, non-vacuous, light amplifier."
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Forest, Lee De. “Letter from Lee De Forest to Arnold O. Beckman,” November 19, 1952. Beckman Historical Collection, Box 1, Folder 18. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/8w32r6604.
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