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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39/00
Filtering material for liquid or gaseous fluids
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B01D39/02
Loose filtering material, e.g. loose fibres
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B01D39/06
Inorganic material, e.g. asbestos fibres, glass beads or fibres
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