3565997

Information

• Patent Grant
• 3565997

• References
• Source

• Patent Number

  3,565,997

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1971
  54 years ago

• CPC

  • G10H1/30 - to reiteratively sound two tones

• US Classifications

  • 084 - Music
  • 984 - Musical instruments