3921491

Information

• Patent Grant
• 3921491

• References
• Source

• Patent Number

  3,921,491

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • G10H1/383 - Chord detection and/or recognition
  • G10H2210/596 - Chord augmented
  • G10H2210/601 - Chord diminished
  • G10H2210/616 - Chord seventh, major or minor
  • G10H2210/626 - Chord sixth
  • Y10S84/22 - Chord organs
  • Y10S84/25 - Pedal clavier

• US Classifications

  • 084 - Music
  • 984 - Musical instruments