3879633

Information

• Patent Grant
• 3879633

• References
• Source

• Patent Number

  3,879,633

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1975
  49 years ago

• CPC

  • H04N9/29 - using demagnetisation or compensation of external magnetic fields
  • H01J29/003 - Arrangements for eliminating unwanted electromagnetic effects
  • H01J29/702 - Convergence correction arrangements therefor
  • H01J2229/0053 - Demagnetisation
  • H01J2229/5637 - Colour purity

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 307 - Electrical transmission or interconnection systems
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 348 - Television
  • 361 - Electricity: electrical systems and devices