3705523

Information

• Patent Grant
• 3705523

• References
• Source

• Patent Number

  3,705,523

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1972
  52 years ago

• CPC

  • H04Q3/545 - using a stored programme
  • H04Q2213/13141 - Hunting for free outlet, circuit or channel
  • H04Q2213/13388 - Saturation signaling systems

• US Classifications

  • 379 - Telephonic communications