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.
paper pulp producing and handling systems, comprising one or more of the following; digesters, mixers, pumps, screens, washers, degassers, bleachers, oxygen delignifiers, blow tanks, feed chests, air locks, chip bins, chip meters, low pressure feeders, steaming vessels, chip chutes, metal traps, high pressure feeders, sand separators, level tanks, in-line drainers, top separators, impregnation vessels, blow units, flash tanks, samplers, filtrate tanks, air/water separators, evaporators, steam mixers, dischargers, diffusers, recovery boilers, heat treaters, slakers, recausticizers, clarifiers, oxidizers, gas converters, power boilers, concentrators, leachers, incinerators, crystallizers, filters, non-condensible gas collection systems, chemical production systems, paper machines, paper dryers, water treatment systems, cooling towers, condensers, strippers, and water management systems; parts for the foregoing sold as a unit