3668334

Information

• Patent Grant
• 3668334

• References
• Source

• Patent Number

  3,668,334

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1972
  52 years ago

• CPC

  • H04R25/04 - comprising pocket amplifiers
  • H04R25/554 - using a wireless connection

• US Classifications

  • 455 - Telecommunications
  • 381 - Electrical audio signal processing systems and devices