3815706

Information

• Patent Grant
• 3815706

• References
• Source

• Patent Number

  3,815,706

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • G10H1/047 - by acousto-mechanical means

• US Classifications

  • 181 - Acoustics
  • 381 - Electrical audio signal processing systems and devices
  • 984 - Musical instruments