Electronic discharge device
United States Patent 2331398
Inventors:
Ingram, Sydney B.
Publication Date:
10/12/1943
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
Other Classes:
313/346R, 313/285, 313/326, 313/353, 313/306
International Classes:
H01J17/06; H01J17/04