Image / Eimac 4-400A power tetrode vacuum tube

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Title: Eimac 4-400A power tetrode vacuum tube
Creator: Eitel-McCullough, Inc. (San Carlos, Calif.)
Date Created and/or Issued: 1957-1963
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: Eimac power tetrode vacuum tube Type 4-400A with uncommon graphite anode, circa 1960. "Eimac 4-400A Made in U.S.A." printed on the glass.
Type: image
Identifier: 3BF6B02C-A96E-4B90-9DFB-884182410436
2003-1-2300
Subject: Eitel-McCullough, Inc
Vacuum-tubes--Manufactures (LCSH)
Tetrodes (LCSH)

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