3746793

Information

• Patent Grant
• 3746793

• References
• Source

• Patent Number

  3,746,793

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1973
  51 years ago

• CPC

  • H04L21/04 - at the receiving end
  • G06F3/0489 - using dedicated keyboard keys or combinations thereof
  • G06F3/153 - using cathode-ray tubes
  • G09G5/222 - Control of the character-code memory
  • H04M11/085 - using a television receiver

• US Classifications

  • 379 - Telephonic communications
  • 345 - Computer graphics processing and selective visual display systems