2532694

Information

• Patent Grant
• 2532694

• References
• Source

• Patent Number

  2,532,694

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1950
  74 years ago

• CPC

  • H04R21/021 - with granular resistance material

• US Classifications

  • 381 - Electrical audio signal processing systems and devices