2305905

Information

• Patent Grant
• 2305905

• References
• Source

• Patent Number

  2,305,905

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1942
  81 years ago

• CPC

  • H03G9/10 - for tone control and volume expansion or compression

• US Classifications

  • 330 - Amplifiers