A filter having two plate-shaped cover members whose opposite major faces are formed with grooves are sealed to each other to form a chamber in which opposite surfaces of a layer of filtering material are engaged by the grooved major faces and bound the grooves. A conduit and an opening in one cover...http://www.google.fr/patents/US3935110?utm_source=gb-gplus-shareBrevet US3935110 - Enclosed filtering unit for filtering and/or treating liquid or gaseous media
Enclosed filtering unit for filtering and/or treating liquid or gaseous media
