2167462

Information

• Patent Grant
• 2167462

• References
• Source

• Patent Number

  2,167,462

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1939
  85 years ago

• CPC

  • H03G9/06 - for gain control and tone control

• US Classifications

  • 330 - Amplifiers
  • 333 - Wave transmission lines and networks
  • 381 - Electrical audio signal processing systems and devices