3723664

Information

• Patent Grant
• 3723664

• References
• Source

• Patent Number

  3,723,664

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • H04M1/278 - using punched cards or tapes

• US Classifications

  • 379 - Telephonic communications
  • 235 - Registers
  • 341 - Coded data generation or conversion