Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
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B04C
APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
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9/00
Combinations with other devices, e.g. fans,; expansion chambers, diffusors, water locks
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B04C2009/004
with internal filters, in the cyclone chamber or in the vortex finder
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