U.S. federal trademark · Serial No. 78429586
sleeving system, namely frameworks of metal for creating an opening in a wall or floor, and for passing duct work and utilities, namely, conduit, piping, ducting, buss bar, and raceways through the wall or floor for purposes of fire stopping, stopping air and gas flow, and as a environmental seal
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.