2425818

Information

• Patent Grant
• 2425818

• References
• Source

• Patent Number

  2,425,818

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1947
  77 years ago

• CPC

  • H04Q5/16 - by predetermined number of pulses

• US Classifications

  • 340 - Communications: electrical
  • 379 - Telephonic communications