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B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
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FR452347D1912-02-201912-12-24Perfectionnements aux filtres pour huiles à bruler
ExpiredFR452347A
(fr)