U.S. federal trademark · Serial No. 87383518
Building pressurization system comprised of motors and power-operated blowers for purging flammable gas from an enclosure and pressurizing an enclosure with a protective gas; building pressurization system comprised of motors and power-operated blowers for purging flammable gas from an enclosure and pressurizing an enclosure with a protective gas for use with an environmental control apparatus
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.