2607859

Information

• Patent Grant
• 2607859

• References
• Source

• Patent Number

  2,607,859

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1952
  72 years ago

• CPC

  • H04R21/021 - with granular resistance material

• US Classifications

  • 381 - Electrical audio signal processing systems and devices