Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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31/00
Cathode ray tubes; Electron beam tubes
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H01J31/08
having a screen on or from which an image or pattern is formed, picked up, converted, or stored
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H01J31/10
Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
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H01J31/12
with luminescent screen
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H01J31/14
Magic-eye or analogous tuning indicators
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