3688009

Information

• Patent Grant
• 3688009

• References
• Source

• Patent Number

  3,688,009

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • G10H1/38 - Chord
  • Y10S84/08 - Keyed oscillators

• US Classifications

  • 084 - Music
  • 984 - Musical instruments