3369439

Information

• Patent Grant
• 3369439

• References
• Source

• Patent Number

  3,369,439

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1968
  56 years ago

• CPC

  • G10G1/02 - Chord or note indicators, fixed or adjustable, for keyboard of fingerboards
  • G09B15/02 - Boards or like means for providing an indication of notes
  • G09D1/00 - Railway or like time or fare tables Indicating or reading aids therefor
  • G10G1/00 - Means for the representation of music
  • G10G3/02 - using mechanical means only
  • G10G3/04 - using electrical means

• US Classifications

  • 084 - Music