2257266

Information

• Patent Grant
• 2257266

• References
• Source

• Patent Number

  2,257,266

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1941
  84 years ago

• CPC

  • H04Q3/00 - Selecting arrangements
  • H04Q5/16 - by predetermined number of pulses

• US Classifications

  • 379 - Telephonic communications