Image / Cunningham experimental tube

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Title: Cunningham experimental tube
Creator: Atlantic-Pacific Radio Laboratories Co., Inc. (San Francisco, Calif.)
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: Believed to be an AP solenoid made after Cunningham's death, for lab or experimental use, using a socket from a different type of tube. The socket is from an audion tube manufactured by Marconi. Marconi branding on one side of base. Lettering on opposite side reads, "De Forest Audion. Sold only for amateur and experimental use."
Type: image
Identifier: FBB9DE9C-2DF6-4742-9053-397343230989
2003-1-843
Subject: Vacuum-tubes
Nineteen twenties
Solenoids
San Francisco (Calif.)

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