Air cleaning apparatus, installations and components, namely, exhaust gas catalysts for mobile and stationary combustion engines; Devices for catalytic purification of exhaust gases, namely, soot filters, inline burners in the nature of filters and purifiers for removing contaminants from exhaust gases, parts for inlet tubes for reactive agents, namely parts for injection nozzles which are parts of exhaust gas purification systems, mixers for mixing reactants into exhaust gases and built-in e...