Hydraulic engines and motors; hydraulic controls for machines, motors and engines; pumps as parts of machines, engines or motors; pumps for parts of machines; Valves as machine parts; motors, other than for land vehicles; motors, electric, other than for land vehicles; crankcases for machines, motors and engines; gear boxes, other than for land vehicles; reduction gears being part of machines, except for land vehicles; clutches, other than for land vehicles; control mechanisms in the nature o...