Electron discharge device
United States Patent 2506627

Inventors:
Charles, Barford Norman
Publication Date:
05/09/1950
Export Citation:
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Assignee:
EMI LTD
Primary Class:
315/5.140
Other Classes:
313/337, 313/2.100, 315/39, 313/348, 315/5.190
International Classes:
H01J25/24; H01J25/00
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US Patent References:
2151765Device for generating electrical oscillations
2128232Electron tube