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6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
wellpoints, jetting heads, nozzles, well screens, hose couplings, pipe couplings, header pipe, manifolds, swing joints, pipe fittings, elbows, t's, caps, dresser couplings, sand drains, pipe nozzles, gate valves, valves, shut off cocks, and pipe sleeves
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7
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.
pumps, wellpoint pumps, portable drills, hole punchers, and jetting pumps
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9
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
pressure gauges
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
water and sanitary supplies-namely, nozzles, well screens, hose couplings, pipe couplings, pipe fittings, elbows, t's, caps, dresser couplings, pipe nozzles, gate valves, valves, shut off cocks, snap bands, and pipe sleeves
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17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
fluid hose