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| View Original: | Cylindrical Audion, made by Lee deForest's laboratory, c. late 1910s-1920s - National Electronics Museum - DSC00107.JPG (2493x4091) | |||
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| Keywords: Cylindrical Audion, made by Lee deForest's laboratory, c. late 1910s-1920s - National Electronics Museum - DSC00107.JPG en Exhibit in the National Electronics Museum 1745 West Nursery Road Linthicum Maryland USA All items in this museum are unclassified The museum permitted photography without restriction 2014-07-21 14 29 30 own Daderot cc-zero Vacuum tubes in the National Electronics Museum Uploaded with UploadWizard Audion | ||||
