TREA

wherein a light-ray scans a photo-emissive screen

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Industry

  • CPC
  • H01J40/20
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Parent Industries

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS H01J40/00Photoelectric discharge tubes not involving the ionisation of a gas

Current Industry

H01J40/20wherein a light-ray scans a photo-emissive screen
Industries