[Class : 6] 'Castings Of Common Metals[Class : 7] Piston Rings, Ball Rings For Bearings, Grease Rings Which Form Of Parts And Machines, Gears, Clutches Other Than Land Vehicles"[Class : 12] "Piston Assembly. Liners, Piston Rings, Pistons, Clutches Parts And Fittings Thereof All For Use In Vehicles, Land, Air And Water".