TREA

with mask carrying a number of selectively displayable signs

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Industry

  • CPC
  • H01J31/16
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Parent Industries

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS H01J31/00Cathode ray tubes Electron beam tubes

Current Industry

H01J31/16with mask carrying a number of selectively displayable signs
Industries