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Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
a subsurface assembly for use in geothermal, water, oil and gas wells used for the extraction of oil, gas or water comprising sleeves, sliding sleeves, jetting assembly, packers, activation devices, darts, latching mechanisms, balls, collets, and coiled tubing driven tools; drilling equipment in the nature of earth drilling machines; hydraulic fracturing equipment, namely, high-pressure pumps and slurry blender machines for use in subsurface hydraulic fracturing operations; well stimulation equipment, namely, pumps, blender, and machine coiled-tubing driven tools; well completions equipment, namely, perforations tools, production tubing, sealing elements, sleeves, and activation devices