Image / de Forest double grid, double plate audion

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Title: de Forest double grid, double plate audion
Creator: Unknown
Date Created and/or Issued: 1951/ /
Contributing Institution: History San Jose Research Library
Collection: History San Jose Online Catalog
Rights Information: Please contact the contributing institution for more information regarding the copyright status of this object.
Description: From Gerald F. J. Tyne, with handwritten note on reverse: "Double grid, double plate Audion with Hudson type filament. Photographed against cross-section background to show size."
Type: image
Format: Black & White
Identifier: 0BFDBF95-7B96-400A-98B4-331373466810
2003-59-304
Subject: Audion
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