2422565

Information

• Patent Grant
• 2422565

• References
• Source

• Patent Number

  2,422,565

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1947
  78 years ago

• CPC

  • H04Q5/16 - by predetermined number of pulses
  • H04Q3/0008 - using relay selectors in the switching stages

• US Classifications

  • 379 - Telephonic communications