U.S. federal trademark · Serial No. 71587002 · Reg. No. 0538999
MECHANICAL VISCOUS-IMPINGEMENT VENTILATING AIR FILTERS OF THE DISPOSABLE TYPE WHEREIN THE ENTIRE FILTER IS DISCARDED AFTER USE AND REPLACED BY A NEW FILTER INSTEAD OF BEING CLEANED
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.