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B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
B01D25/22—Cell-type filters
B01D25/26—Cell-type stack filters
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FR324696A1902-09-231902-09-23Filtre à colonne dénommé "filtre soleil" pour filtrer, avec ou sans pression, à l'abri de l'air ou à l'air libre
ExpiredFR324696A
(fr)