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Photograph of a component for the mechanical scanning television system Lee de Forest was developing at the time. It may be the amplifier developed by F. Alton Everest, a professor at Oregon State University, for de Forest. Accompanies a binder titled "Correspondence between LEE DE FOREST and F. Alton Everest 1938, 39, 40." (2003-34-33)
Television picture tubes (LCSH) Television scanning (LCSH) Inventions Amplifiers (Electronics) (LCSH)