Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01D
SEPARATION
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Filters with filtering elements which move during the filtering operation
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B01D33/06
with rotary cylindrical filtering surfaces, e.g. hollow drums
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B01D33/073
arranged for inward flow filtration
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B01D33/09
with surface cells independently connected to pressure distributors
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