U.S. federal trademark · Serial No. 87316101 · Reg. No. 5734361
high density polyethylene (HDPE) underdrain filter for sewage; underdrain filter for water purification by gravity or filtration; plastic water filtration apparatus for use in water purification plant; underdrain block filter for drinking water and desalination pre-treatment
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.