3591822

Information

• Patent Grant
• 3591822

• References
• Source

• Patent Number

  3,591,822

• Date Filed

  Not available

• Date Issued

  Tuesday, July 6, 1971
  53 years ago

• CPC

  • C04B41/009 - characterised by the material treated
  • C04B41/52 - Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
  • C04B41/89 - for obtaining at least two superposed coatings having diffferent compositions
  • H01J19/30 - characterised by the material
  • C04B2111/94 - Electrically conducting materials
  • H01J2893/0021 - carbon

• US Classifications

  • 313 - Electric lamp and discharge devices