87048292
May 24, 2016
Feb 13, 2018
Active Trademark
Trombone playing assistance devices, namely, devices comprising trombone slide position indicators and sensors; kits and devices for assisting in learning to play trombone comprised of devices comprising trombone slide position indicators and sensors and instructions for use; devices for assisting in learning to play trombone, namely, devices comprising trombone slide position indicators and sensors
Musical Instruments