2225712

Information

• Patent Grant
• 2225712

• References
• Source

• Patent Number

  2,225,712

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1940
  84 years ago

• CPC

  • G09F13/26 - Signs formed by electric discharge tubes
  • C09K11/025 - Use of non-luminescent materials other than binders
  • H01J61/42 - by transforming the wavelength of the light by luminescence
  • H01J63/00 - Cathode-ray or electron-stream lamps
  • H01J2893/0031 - Tubes with material luminescing under electron bombardment

• US Classifications

  • 313 - Electric lamp and discharge devices