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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5/00
Apparatus in which the axial direction of the vortex is reversed
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B04C5/24
Multiple arrangement thereof
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B04C5/28
for parallel flow
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