74011336
Dec 14, 1989
Dec 24, 1991
AIR PURIFYING UNITS FOR CLEANING WASTE AIR OF INDUSTRIAL INSTALLATIONS; NAMELY, AIR PURIFYING UNITS FOR REMOVING IMPURITIES FROM SUCH WASTE AIR BY ONE OR MORE OF THE FOLLOWING METHODS; COMBUSTION, THERMAL OXIDATION, MECHANICAL FILTERING, ELECTROSTATIC FILTERING, ABSORPTION, ADSORPTION, AND WASHING OUT OF SAID IMPURITIES; AND WASTE AIR CLEANING INSTALLATIONS COMPRISING ONE OR MORE OF THE AFORESAID AIR PURIFYING UNITS
Environmental Control Apparatus