Carburetors; Dust exhausting installations for cleaning purposes; Engine exhaust system comprised of a particulate trap; Engine exhaust systems comprised of pipes, collector and muffler; Vacuum pumps; Vacuum pumps; Valves being parts of machines; Air condensers; Air-cooled condensers; Connecting rods for machines, motors and engines; Exhausts for motors and engines; Fuel and air mixture regulators being parts of internal combustion engines; Hydraulic controls for machines, motors and engines; Intake and exhaust air flow vane assembly device for use in an internal combustion engine; Intake and exhaust air flow vane assembly device for use in an internal combustion engine; Mechanical condensators; Oil filters for motors and engines; Oil pumps for use in motors and engines; Pneumatic controls for machines, motors and engines; Pumps as parts of machines, motors and engines; Valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines