3671958

Information

• Patent Grant
• 3671958

• References
• Source

• Patent Number

  3,671,958

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  53 years ago

• CPC

  • G10K1/0645 - provided with loudness adjustment

• US Classifications

  • 340 - Communications: electrical
  • 084 - Music
  • 116 - Signals and indicators