For Chords Patents (Class 84/317)
Capo tastos (Class 84/318)
  • Devices for use with stringed musical instruments
    Patent number: 3995523
    Abstract: A device for use in playing a stringed instrument comprises a base plate which is adapted to be fitted above the strings and which carries at least one pair of keys connected by a cross-bar by which both keys can be operated together to engage different strings or either key can be pressed against its own string only. There may also be other, individually operable keys.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: December 7, 1976
    Inventor: Amos Alexander Graham Clarke