Air craft piston engine cylinder assemblies; Connecting rods for machines, motors and engines; Crankcases for machines, motors and engines; Cylinders for machines; Engine cylinders for automobiles; Engine cylinders for land vehicles; Engine cylinders for vehicles; Internal combustion engine parts, namely, piston rings; Internal combustion engine parts, namely, pistons; Internal combustion land vehicle engine parts, namely, connecting rods; Piston rings; Piston rings being engine parts; Piston...