U.S. federal trademark · Serial No. 74071530 · Reg. No. TMA390
system for the treatment of waste water; namely, a submerged trickling filter assembly including a filter, consisting of a false floor fitted with slotted nozzles and supporting a volume of media having granules of predetermined size in relation to the liquid to be treated, and a piping network having through-bores of predefined dimensions being submerged in the media to supply the process air
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