3881390

Information

• Patent Grant
• 3881390

• References
• Source

• Patent Number

  3,881,390

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1975
  49 years ago

• CPC

  • G09B15/08 - Practive keyboards
  • G10H1/0016 - Means for indicating which keys, frets or strings are to be actuated
  • G10H1/36 - Accompaniment arrangements
  • G10H2220/051 - Fret indicator
  • G10H2220/071 - Pedal indicator
  • G10H2230/111 - Spint ukulele
  • G10H2230/151 - Spint banjo, i.e. mimicking a stringed instrument with a piece of plastic or animal skin stretched over a circular frame or gourd

• US Classifications

  • 084 - Music
  • 360 - Dynamic magnetic information storage or retrieval
  • 984 - Musical instruments