Designer guitar box

Detachable pick-up unit for use in electronic stringed...

Device and method for adjusting the tension of a string of a...

Device and method for automatic tuning of a string...

Device and method for automatically tuning a stringed...

Device called a heel-operated device, which allows a part of...

Device for adjusting the tension of the strings of a guitar...

Device for adjusting the tension of the strings of a...

Device for automatically tuning a string of a stringed...

Device for fastening the reed on the mouthpiece of wind...

Device for forming chords

Device for positioning guitar or double bass, and guitar...

Digital/electronic logic and electromechanical control for...

Drone reed

Drum

Drum

Drum beater

Drum beater device

Drum head assembly

Drum head assembly and method of tensioning a drum head