2203756

Information

• Patent Grant
• 2203756

• References
• Source

• Patent Number

  2,203,756

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1940
  85 years ago

• CPC

  • H04Q5/16 - by predetermined number of pulses
  • H04Q5/02 - with direct connection for all subscribers

• US Classifications

  • 379 - Telephonic communications