7 Metalworking machines and machine tools; automatic warehousing systems comprised primarily of cranes and racks being parts of the loading-unloading machines and apparatus; sorting machines and apparatus for the loading and unloading of articles, namely, machines and apparatus for sorting bars, pipes and trays in the agricultural and fishery industries, books, files, wafers and pallets in the food industry, boxes, containers and packaging in paper, pulp and textile factories, bags, bales and buckets in the mining and oil industries, coils in chemical factories, barrels in electrical equipment factories, cans and cardboard in electronic parts factories, and containers in retail and wholesale stores and removing non-conforming materials; power-driven rotary storage and retrieval installations and apparatus, namely, material handling machines in the nature of palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing machines; power-driven sliding storage and retrieval installations and apparatus, namely, material handling machines in the nature of palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing machines; power-driven mobile storage and retrieval installations and apparatus, namely, material handling machines in the nature of palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing machines; industrial palletizing robots; stacker cranes; mechanical and hydraulic lifts, other than ski-lifts; hoist cranes; sorting conveyors, namely, machines and apparatus for sorting bars, pipes and trays in the agricultural and fishery industries, books, files, wafers and pallets in the food industry, boxes, containers and packaging in paper, pulp and textile factories, bags, bales and buckets in the mining and oil industries, coils in chemical factories, barrels in electrical equipment factories, cans and cardboard in electronic parts factories, and containers in retail and wholesale stores and removing non-conforming materials; moving staircases; conveyors being machines; hoisting machines being mechanical hoists; elevators; roller bridges, namely, wheel-type cranes and crawler-type cranes; belt conveyors; hoists; cranes; loading-unloading machines and apparatus in the nature of rubber tracks being parts of crawlers on loading-unloading machines, elevator chains being parts of machines, elevator belts, belts for conveyers, and lift belts for machines; cultivating machines and implements in the nature of a plant cultivation apparatus, namely, an agricultural seed planting machine that function as an artificial control of light, temperature, moisture, carbon dioxide concentrations, and nourishing solution; mechanical parking systems; vehicle washing installations; fuel dispensing pumps for service stations; electric door openers