3813474

Information

• Patent Grant
• 3813474

• References
• Source

• Patent Number

  3,813,474

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • G10H5/04 - with semiconductor devices as active elements
  • G10H1/043 - Continuous modulation
  • G10H1/06 - Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
  • G10H1/36 - Accompaniment arrangements
  • Y10S84/22 - Chord organs

• US Classifications

  • 084 - Music
  • 984 - Musical instruments