U.S. federal trademark · Serial No. 88311641
This is an open topped cart with wheels, that will transport a drum set inside. You can then fold down the sides, the wheels retract, and the box becomes a platform to set up the drum set on. When done you stack the drum set back inside, you fold back up the sides, and the box becomes a rolling cart
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.