7 Gas filters for commercial and industrial applications, namely, filters for motors and engines used in commercial and industrial applications; Gas filters being parts of machines for commercial and industrial applications, namely, filters for air, axial flow, centrifugal, electric, gas, reciprocating and rotary compressors, compressors as parts of machines, motors and engines, and compressors for machines used in commercial and industrial applications; Gas filters being parts of machines for commercial and industrial applications, namely, filters for centrifugal, cyclone, dust, oil, and vibratory screen separators and oil-water separators for pneumatic controls being part of machines used in commercial and industrial applications; filters for commercial and industrial machines; fuel and oil filters; air filters for mechanical purposes as related to telecommunications, computer networking, power generation, medical and transportation equipment and military electronics; dust filters for commercial and industrial applications, namely, dust filters for dust separator and collector machines used in commercial and industrial applications; fuel filters; filters for motors and engines; oil filters for motors and engines ; air filters for mechanical purposes with respect to forced air cooling and ambient air ventilation of electronics and machinery enclosures; filters for machines, namely, filters for removing impurities from fluids and liquids used in the petroleum, chemical, biofuel, animal nutrition, electronics, and food and beverage industries; filters for machines, namely, filters for removing impurities from fluids and liquids used in the medical, pharmaceutical and biopharmaceutical industries; power operated rescue tools, namely, cutters, spreaders, power units and parts therefor; centrifuges; machines for rotational molding of plastic articles for commercial or industrial use; metal trimming and routing machines for industrial use; machine tools and cutting machines for forming of materials; machining stations for grinding, polishing, cutting, rounding off, deburring and honing for forming of materials; Machine tools, namely, metal finishing machines; Metalworking machines, namely, electrochemical polishing machines; Grinding machines for forming of materials; Electric machines and apparatus for polishing metal parts; Power operated angle grinders; Machines for electrochemical machining for flue gas scrubbing and metalworking; Hand-held tools, other than hand-operated, namely, hand-held electrochemical polishing tools; Threading machines and threading machine components being thread rolling tools, namely, thread rolling machines, thread rolling heads, thread rolling dies, thread rolls, and thread rolling devices; Oil field cementing equipment, namely, drilling rig mechanization machines, centralisers for casing and tubing, couplings for machines; Drilling machines, namely, corers for obtaining a core sample from the earth; Drilling machines, namely, core barrels; Drilling machines, namely, wireline coring systems, namely, a coring assembly wherein the inner barrel can be recovered to a surface by a wireline; Drilling machines, namely, core barrel assemblies for fully enclosing core samples in an inner tube of a core barrel, namely, a core barrel assembly with an upper head and a lower shoe; Drilling machines, namely, core barrel assemblies for trapping fluids, gas and liquids in a core barrel, namely, a core barrel assembly having upper and lower seals; power drill bits; core drilling bits; power tools, namely, core saws; Shearing machines for metalworking, namely, hydraulic shear plates; power operated core pluggers being machines; power operated plug trimmers being machines; power operated core preservers being machines; downhole power tools, namely, drill bits, reamers, cutters, junk subs and debris catchers, wipers, scrapers, brush tools, polishers and scourers, fluid filters, fluid circulators, zonal isolation packers, mud packers, packer installers, inflatable packers and packer setters; Power tools, namely, reamers; Power tools, namely, reaming shells; downhole power tools, namely, core barrel assemblies provided with pressure, temperature, tri-axis vibration, torque, tension, compression, rotation and geographical orientation sensors for acquiring, analyzing, processing and displaying core properties during core sampling and retrieval; gas sample conditioning systems, namely, a vacuum pump, flow and pressure regulators being parts of machines, filtration and moisture removal system being parts of machines, line pressure and vacuum alarm system and automatic shutdown mechanism, a drying filtration, regulation and distribution system for compressed air, and a regulated sample output; structural or replacement parts and fittings for the aforesaid goods; Electronically and power-operated tools, namely, gas extractors