U.S. federal trademark · Serial No. 79156337 · Reg. No. 4961931
steam control valves for heat exchange columns and for material exchange columns, fractionating columns, rectifying columns, extraction columns, gas scrubbers and refining towers; separating trays for controlling vapor and liquid flow in heat exchange columns and in material exchange columns, fractionating columns, rectifying columns, extraction columns, gas scrubbers and refining towers; and valve trays, namely, valves incorporated in fractionating trays for controlling vapor and liquid flow in heat exchange columns and in material exchange columns, fractionating columns, rectifying columns, extraction columns, gas scrubbers and refining towers
valves as installation component parts for machines, valve trays containing valves as installation component parts for machines and separating trays as installation component parts for machines, for material exchange columns, synthesis towers, condensation towers, ammonia separation towers, coking units, petroleum refining installations and petrochemical installations
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.