2408299

Information

• Patent Grant
• 2408299

• References
• Source

• Patent Number

  2,408,299

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1946
  77 years ago

• CPC

  • H04Q5/08 - Signalling by continuous ac

• US Classifications

  • 340 - Communications: electrical
  • 379 - Telephonic communications