2179915

Information

• Patent Grant
• 2179915

• References
• Source

• Patent Number

  2,179,915

• Date Filed

  Not available

• Date Issued

  Tuesday, November 14, 1939
  85 years ago

• CPC

  • H04B3/12 - in negative-feedback path of line amplifier

• US Classifications

  • 333 - Wave transmission lines and networks
  • 330 - Amplifiers