7
Machines for filtering dust; machines for filtering gases; machines for filtering fumes from air; blanking presses; printing presses; rotary presses; drum filters for mining machines; filters for motors and engines; dust filters being parts of vacuum machines; centrifugal pumps; centrifugal decanting machines incorporating screw conveyors; industrial centrifugal decanting machines; drainage machines in the nature of drain jetters; centrifugal separator machines featuring drums; spin driers, not heated; fluid separation machines; gravel, stone, and dirt sorting and screening machines; soil screening machines; machines for separating target materials from mixtures of materials; steam and oil separating machines for chemical processing; oil-water separators for pneumatic controls being part of machines; filters for mining machines; grain separating machines; pressure regulators being parts of machines featuring drums; all of the foregoing for use in processing tailings in the mining industry and not for laboratory use
11
Process equipment for liquid-solid separation, namely, separators for the cleaning and purification of liquids; apparatus for the treatment of solids settled from liquids, namely, metal cylindrical chamber and screen for use in filtering and removing settleable solids from liquid; all for use in in processing tailings in the mining industry and not for laboratory use
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