Aftermarket automobile engine exhaust systems comprised of pipes, collectors, mufflers, particulate traps, etc.; Air-intake tubes and filters for after-market installation of automotive engines; Circulating pumps; Electric door openers and closers; Filters for cleaning cooling air, for engines; Fitted covers for swimming pool vacuum cleaners; Internal combustion engine parts, namely, coils, manifolds, particulate filters, etc.; Machines tools for removing waste and trash; Power-operated saws; Self-lubricating mechanical friction parts, especially of composite materials, namely, wear rings, washers, bushings, spherical bearings, bearing pads, sliding blocks and machine transmission gears all for load bearing machines, conveyors, handling trucks and machines, lifting machines, agricultural machinery, construction equipment machines and hydraulic turbines; Swimming pool sweepers; Vehicle parts, namely, carburetors; Vehicle parts, namely, power valve for carburetors