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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29/00
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
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H01J29/46
Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
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H01J29/481
Electron guns using field-emission, photo-emission, or secondary-emission electron source
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