2583732

Information

• Patent Grant
• 2583732

• References
• Source

• Patent Number

  2,583,732

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1952
  73 years ago

• CPC

  • H04R21/021 - with granular resistance material

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 252 - Compositions