7 Motors and engines other than for land vehicles, namely, motors and engines for working machines, motors and engines for locomotion by water and air, jet engines other than for land vehicles; sealing joints, namely, piston rings; machine parts, namely, joints for connecting sliding strips, plates and guides, gears for machines, transmission chains and shafts other than for land vehicles, bearings for transmission shafts being parts of machines, crankcases for machines, motors and engines, pressure reducers as parts of machines, regulators being parts of machines, and back pressure valves as parts of machines, hydraulic and pneumatic controls for machines, engines and motors, pulleys being parts of machines, bobbins for weaving looms, pistons for engines, speed governors for machines, engines and motors, namely, variable speed drives other than for land vehicles, engines and motors other than for land vehicles, electric actuators, linear actuators, torque converters other than for land vehicles, clutches other than for land vehicles, universal joints, namely, cardan joints other than for land vehicles; turbines other than for land vehicles, components for brakes other than for vehicles, namely, brake linings for machines, brakes for machines, brake linings and shoes other than for vehicles, starters for motors and engines, dynamos, bicycle dynamos, spark plugs, igniter magnetos for engines, injectors for engines, fan belts for motors and engines, timing belts for motors and engines other than for land vehicles, dynamo belts, belts for conveyors, machine parts, namely, ball-bearings, roller bearings for machines, exhaust pipes, silencers and manifolds for motors and engines, exhaust apparatus, namely, exhaust tips, exhaust manifold for engines; mufflers for motors and engines, carburetors, power valve for carburetors, cooling radiators for motors and engines, fans for motors and engines, air, fuel and oil filters for motors and engines, hydraulic and pneumatic cylinders other than engine parts, namely, engine cylinders for land vehicles; cylinder heads for engines, compressed air engines other than for land vehicles, air compressors, electric compressors, gas compressors