3305643

Information

• Patent Grant
• 3305643

• References
• Source

• Patent Number

  3,305,643

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1967
  58 years ago

• CPC

  • H04M1/31 - by interrupting current to generate trains of pulses by periodically opening and closing contacts to generate trains of pulses
  • H04M1/315 - Clutches Spring assemblies Speed regulators
  • H04M1/34 - Lost-motion or other arrangements for ensuring a pause between successive digit transmissions

• US Classifications

  • 379 - Telephonic communications