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.
metal columns, caps and bases; metal column clamps; metal pens, stalls, and gates and metal parts therefor; metal stall partitions; metal window frames; metal alignmeint devices for cattle in stalls; metal curb clamps; metal door track and hardware-namely, track covers, door stops, hangers, brackets, end caps, latches, stay rollers and pulls; neck chains and straps for cow stalls; rust shields for partitions; stanchions with and without operating devices; pneumatic door operators; and pipeline clamps
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.
barn cleaners and parts; feed conveyors and parts; cattle feeders and parts; pulley blocks; silo unloaders and parts; silage distributors; barn floor scrapers; wheeled container with material spreading means-namely, manure spreaders; feed hoppers; manure handling equipment-namely, manure pump spreaders, manure soil injectors, and "homogenator" manure pumps; and feed mills
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.
electric cow trainers; thermostats; electrical operating and control systems for feed conveyors, cattle feeders, milking parlors, barn cleaners and silo unloaders
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
electric ventilating fans and parts; ridge and revolving head ventilators with and without conduits and with and without fans; air intakes; drains (floor and manger); and water bowls for livestock (automatic, heated and non-heated)