2515414

Information

• Patent Grant
• 2515414

• References
• Source

• Patent Number

  2,515,414

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1950
  74 years ago

• CPC

  • H04R13/02 - Telephone receivers

• US Classifications

  • 381 - Electrical audio signal processing systems and devices