IMO

Machine parts for the transmission of power, namely toothed rings, large diameter anti-friction bearings in the nature of slewing rings, slew bearings, four-point contact bearings, and ball- and roller-bearing slewing rings, and mechanical slew drives in the nature of slewing rings with a drive unit, that consists of a worm-gear pair or a spur-toothed pinion driven by a hydraulic or an electric motor

Automobile parts for the transmission of power, namely, toothed rings, large diameter anti-friction bearings in the nature of slewing rings, slew bearings, four-point contact bearings, and ball- and roller-bearing slewing rings, and mechanical slew drives in the nature of slewing rings with a drive unit, that consists of a worm-gear pair or a spur-toothed pinion driven by a hydraulic or an electric motor