3697688

Information

• Patent Grant
• 3697688

• References
• Source

• Patent Number

  3,697,688

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1972
  52 years ago

• CPC

  • H01J29/182 - acting upon the lighting-up of the luminescent material other than by the composition of the luminescent material
  • C09K11/886 - with rare earth metals
  • H01F1/0313 - Oxidic compounds
  • H01J29/20 - characterised by the luminescent material
  • H01S3/102 - by controlling the active medium
  • H01S3/16 - Solid materials
  • H04N9/22 - using the same beam for more than one primary colour information

• US Classifications

  • 348 - Television
  • 313 - Electric lamp and discharge devices