Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J61/00—Gas-discharge or vapour-discharge lamps
  • H01J61/02—Details
  • H01J61/38—Devices for influencing the colour or wavelength of the light
  • H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J17/00—Gas-filled discharge tubes with solid cathode
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J2893/00—Discharge tubes and lamps
  • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6055356

Family Applications (1)

Country Status (2)

• 0
  • NL NL26141D patent/NL26141C/xx active
• 1927
  • 1927-12-07 GB GB33063/27A patent/GB285068A/en not_active Expired

Also Published As

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