Thesis (Ph. D.)--Columbia University. / Vita. "The specific data here presented concerns the pentagrid heptode, whose type designation is 6L7 for the metal envelope and 6L7G for the glass envelope."--Introd. "List of numbered references": p. 44-45.
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/609857227 |
Date | January 1940 |
Creators | Wing, Alexander Holbrook, |
Publisher | New York [Menasha, Wis., George Banta Pub. Co.] |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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