3744877

Information

• Patent Grant
• 3744877

• References
• Source

• Patent Number

  3,744,877

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1973
  51 years ago

• CPC

  • G03C1/73 - containing organic compounds
  • C09K9/02 - Organic tenebrescent materials
  • H01J29/14 - acting by discoloration
  • H01J29/182 - acting upon the lighting-up of the luminescent material other than by the composition of the luminescent material

• US Classifications

  • 359 - Optical: systems and elements
  • 252 - Compositions
  • 313 - Electric lamp and discharge devices
  • 568 - Organic compounds