2689886

Information

• Patent Grant
• 2689886

• References
• Source

• Patent Number

  2,689,886

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1954
  71 years ago

• CPC

  • G05F1/607 - using discharge tubes in parallel with the load as final control devices
  • H04N5/165 - to maintain the black level constant

• US Classifications

  • 330 - Amplifiers
  • 348 - Television