7 Electric motors other than for land vehicles; compressed air machines; compressed air pumps; compressed air engines; shaft couplings for machines; control cables for machines, engines or motors; universal joints other than for land vehicles; hydraulic controls for machines, motors and engines; pneumatic controls for machines, motors and engines; compressors for machines; machine valves; fuel filters; oil filters; air cleaners for machines, not for household use; hydraulic pumps; hydraulic control cylinders; hydraulic engines and motors; hydraulic valves being parts of machines; hydraulic tanks being parts of machines; hydraulic filters for motors and engines; apparatus for filling and draining motor vehicle hydraulic circuits; air valves being parts of machines; air brakes for machines; pneumatic coupling apparatus for machines, not land vehicles; hydraulic coupling apparatus for machines, not land vehicles; pistons for machines or engines; machine pumps; pumps for machines, engines or as motor parts; pressure regulators being parts of machines; valves being parts of machines