Anti-pollution devices for motors and engine drives; filters in the form of machine components of motors; air filters for motors and engine drives; filtering machines for chemical processing, motor parts, namely, centrifugal separators and centrifuges; anti-pollution devices for motors and drives, namely, exhaust pipes and exhaust pipe systems comprised of pipes, collector and muffler for vehicles and vessels; catalytic converters for the exhaust gases of internal combustion engines; air filt...