3821460

Information

• Patent Grant
• 3821460

• References
• Source

• Patent Number

  3,821,460

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • G10H5/06 - tones generated by frequency multiplication or division of a basic tone
  • G10H2210/431 - Quarter tone scale, i.e. 24 equal intervals per octave
  • G10H2210/481 - Pythagorean scale

• US Classifications

  • 084 - Music
  • 984 - Musical instruments