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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H01J29/02
Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
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H01J29/06
Screens for shielding; Masks interposed in the electron stream
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H01J29/07
Shadow masks for colour television tubes
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