2489721

Information

• Patent Grant
• 2489721

• References
• Source

• Patent Number

  2,489,721

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1949
  75 years ago

• CPC

  • H03J7/305 - in which an automatic frequency control circuit is brought in action after the scanning action has been stopped

• US Classifications

  • 333 - Wave transmission lines and networks
  • 334 - Tuners
  • 455 - Telecommunications