2494704

Information

• Patent Grant
• 2494704

• References
• Source

• Patent Number

  2,494,704

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1950
  74 years ago

• CPC

  • H04R21/021 - with granular resistance material

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 338 - Electrical resistors
  • 361 - Electricity: electrical systems and devices