U.S. federal trademark · Serial No. 90342302
non-metal rigid tubing and pipes; non-metal rigid filters; silica filters; refractory cloth filters for use with dross slag refractory particles and non-metallic inclusions from molten metals
heat exchangers being parts of machines
heat exchangers not being parts of machines; filtering units for molten metal
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.