7 Articles, tools, machines and apparatus for drilling, completing and producing fluids from oil, gas, condensate and water wells, well bores and boreholes and for intervention in wells, well bores and boreholes, namely, oil-well pumping machines, boring machines and drilling rigs; articles, tools, machines and apparatus for use in drill, completion, intervention and production strings, namely, well drilling machines; articles, tools, machines and apparatus for cementing oil, gas, condensate and water wells, well bores and boreholes, namely, cemented carbide cutting tools and cemented carbide tips; battery-operated down hole tools, namely, electric hand-held drills and bits for power drills; down hole cementing tools, namely, mechanical spreader; flow control and flow circulation tools, namely, pump control valves; subsurface valves being part of machines; well heads; valve assemblies for pumps; hydraulic circulation valves as machine components; circulation valves as machine components; packers, namely, packing machines; intervention packers, namely, packing machines; permanent packers, namely, packing machines; packers actuated by electrical submersible pumps (ESP), namely, packing machines; retrievable packers, namely, packing machines; pocket packers, namely, packing machines; cased hole packers, namely, packing machines; open hole packers, namely, packing machines; subs, namely, submersible pumps; down hole subs, namely, submersible pumps; spacer subs, namely, submersible pumps; straddles, namely, belts for machines; gas lift straddles, namely, belts for machines; perforation cleanup straddles, namely, belts for machines; setting tools, namely, air condensers; non-explosive setting tools, namely, air condensers; motorized setting tools, namely, air condensers; hangers, namely, conveyor lines; intervention hangers, namely, conveyor lines; suspension hangers, namely, conveyor lines; retrievable hangers, namely, conveyor lines; glow plugs; hanger glow plugs; bridge glow plugs; high pressure glow plugs; slips; mechanical slips, namely, automatic slip sheet dispensing machines; hydraulic slips, namely, automatic slip sheet dispensing machines; parts of oilfield wellhead machines, namely, chokes, variable chokes and hydraulically-operated chokes; parts, fittings and accessories for the aforesaid goods, namely, parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe values, manifold industrial pipes, pump and valve parts, pipe fittings and flanges