87062057
Jun 6, 2016
Jan 24, 2017
Heat exchangers for chemical processing; Heat exchangers not being parts of machines; Heat exchangers, not parts of machines; Emission control systems comprised primarily of indirect contact heat exchangers and ozone-based control devices using gas and vapor condensing to control and treat emissions; Fireplace inserts, namely, heat exchangers; Recuperators for chemical processing
Environmental Control Apparatus