U.S. federal trademark · Serial No. 74658984 · Reg. No. 2085496
filtering units for purifying air, gases, exhaust gas [ and liquids, ] and parts therefor; [ bioreactors for biologically purifying liquids, sewage, gases and discharged air, and parts therefor; ] filter elements for mounting in filtering units for filtering air, gases, exhaust gases [ and liquids; carrier elements for microorganisms for mounting in bioreactors ]
[ carrier elements for microorganisms for mounting in bioreactors and biological purification apparatus ]
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