Title:
Cathode for electron discharge devices
Document Type and Number:
United States Patent 2858470

Inventors:
Thurber, Elmer A.
Publication Date:
10/28/1958
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
313/346DC
Other Classes:
313/355, 427/205, 313/311, 313/346R, 427/216, 427/77, 445/51, 427/217
International Classes:
H01J23/05; H01J23/02
US Patent References:
2180988Electrode for electric discharge devices
2392879Electrode manufacture
2472189Thermionic tube having a secondary-emission electrode
2478841Cathode for electric discharge tubes
2538873Electric discharge tube
2594897Cathode structure for electron discharge tubes
2724070Cathode coating for electrical discharge devices and method for making the same
2733378


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