3634619

Information

• Patent Grant
• 3634619

• References
• Source

• Patent Number

  3,634,619

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1972
  53 years ago

• CPC

  • H04N5/2286 - during retrace periods

• US Classifications

  • 348 - Television
  • 315 - Electric lamp and discharge devices: systems