07
Machines and machine tools for the production and the
operation of devices for storing, treating, transporting and
draining-off of liquids, wastes of all kind, screenings,
sludge and filter cake, machines and devices for solid
and/or liquid separation, in particular screening rakes,
step rakes, filter units, sieves, thickener, dewatering
devices, spiral pressing devices, rotary screens, screening
washers, machines and devices for treatment of sand, in
particular sand classifiers and sand separators, spiral
conveyors and spiral conveyors for dry, moist, wet, pasty,
adhesive, dusty, bulky or abrasive material, pumps, in
particular dry or wet positioned pumps for waste water and
sludge, in particular vortex vacuum pumps, bilge pumps,
cutter head pumps and turbotex pumps
09
Weighing, measuring, signalling and checking (supervision)
apparatus and instruments, apparatus and instruments for
conducting, switching, transforming, accumulating,
regulating or controlling of electricity, in particular for
screening rakes, step rakes, filter units, sieves,
thickeners, dewatering devices, spiral pressing devices,
rotary screens, screening washers, machines and devices for
treatment of sand, in particular sand classifiers and sand
separators, spiral conveyors and spiral conveyors for dry,
moist, wet, pasty, adhesive, dusty, bulky or abrasive
material, pumps, in particular dry or wet positioned pumps
for waste water and sludge, in particular vortex vacuum
pumps, bilge pumps, cutter head pumps and turbotex pumps
37
Building construction and installation work, in particular
with respect to devices for storing, treating, transporting
and draining-off of liquids, wastes of all kind, screenings,
sludge and filter cake, machines and devices for solid
and/or liquid separation, in particular screening rakes,
step rakes, filter units, sieves, thickeners, dewatering
devices, spiral pressing devices, rotary screens, screening
washers, machines and devices for treatment of sand, in
particular sand classifiers and sand separators, spiral
conveyors and spiral conveyors for dry, moist, wet, pasty,
adhesive, dusty, bulky or abrasive material, pumps, in
particular dry or wet positioned pumps for waste water and
sludge, in particular vortex vacuum pumps, bilge pumps,
cutter head pumps and turbotex pumps
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