7 Electric generators; current generators; machine coupling and transmission belts except for land vehicles; crank shafts for machines; shaft couplings for machines; power transmission shafts for industrial and commercial machines; electric motors for power generators and/or current generator machines; feeding apparatus for power generators, namely, auxiliary power units for supplying electrical power; sparking plugs for engines, except for land vehicles; igniting devices for engines, namely, heating plugs for diesel engines, except for land vehicles; glow plugs for diesel engines, except for land vehicles; alternators for land vehicles; anti-pollution devices for motors and engines, except for land vehicles; connecting rods for machines, motors and engines; grease boxes for machines; gear boxes other than for land vehicles; brushes being parts of or for use with alternators; non-electric control cables for machines, engines or motors, except for land vehicles; bearing housings being parts of machines; anti-noise cowlings for machines; fuel conversion apparatus for internal combustion engines, namely, fuel filters; driving chains other than for land vehicles, namely, chains for use as engine timing components; hydraulic control mechanisms for machines, engines or motors, except for land vehicles; compressors for machines; torque converters other than for land vehicles; belts for machines; timing belts for motors and engines; cylinder heads for engines; starters for motors and engines, except for land vehicles; dynamos; dynamo belts; dynamo brushes; heat exchangers being parts of machines; exhaust manifolds and pipes for motors and engines; fuel economizers for motors and engines in the nature of fuel injectors; fuel injectors; clutches for machines; transmission gears for machines; feeders, namely, fuel injectors, except for land vehicles; brakes for machines; ball rings for machines for greasing bearings; lubricating pumps being parts of machines; grease boxes, namely, bearing housings being parts of machines; lubrication machines; fuel injectors for engines; joints, namely, connecting rods being parts of engines; internal combustion engine parts, namely, pistons; machines, namely, electric pumps; pump diaphragms; pressure regulators being parts of machines, namely, switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems sold as an integral component of injection molding machines; pressure valves being parts of machines, namely, transducers and transmitters that convert hydraulic or pneumatic pressure into analog electrical signals for monitoring and controlling hydraulic or pneumatic systems sold as an integral component of injection molding machines; industrial robots; exhaust silencers for motors and engines; electric arc welding machines; gas-operated soldering irons; gas welding machines; air filters being parts of machines or engines; air filter cartridges for mechanical purposes; filters for machines, namely, filters and purifiers for removing contaminants from gases used in the semiconductor industry; machine tools for the cutting and forming of materials; motors and engines, except for land vehicles; non-electric machine couplings and transmission components except for land vehicles; agricultural implements other than hand-operated, namely, incorporators; machines for building and public works, namely, concrete pavement machines; generators of electricity; welding apparatus, namely, gas welding guns; compressors for refrigerators; devices for converting wind power into electricity, namely, wind turbines; centrifugal water separators