3773540

Information

• Patent Grant
• 3773540

• References
• Source

• Patent Number

  3,773,540

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1973
  51 years ago

• CPC

  • H01J29/14 - acting by discoloration
  • C01B33/2892 - containing an element or a compound occluded in the pores of the network
  • C09K9/00 - Tenebrescent materials
  • Y10T428/24413 - Metal or metal compound
  • Y10T428/258 - Alkali metal or alkaline earth metal or compound thereof

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 252 - Compositions
  • 313 - Electric lamp and discharge devices