TREA

acting by discolouration

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Industry

  • CPC
  • H01J1/58
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Parent Industries

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS H01J1/00Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps

Current Industry

H01J1/58acting by discolouration
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