3394220

Information

• Patent Grant
• 3394220

• References
• Source

• Patent Number

  3,394,220

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1968
  56 years ago

• CPC

  • H04N1/403 - Discrimination between the two tones in the picture signal of a two-tone original
  • G03G15/328 - using a CRT

• US Classifications

  • 358 - Facsimile and static presentation processing