.~> Filter having selectively usable flow connector means
DEFINITION
Classification: 210/239
(under the class definition) Apparatus so constructed that its mode of operation can be changed by reassembling all or some of its parts in a different relationship to each other or by addition or omission of a part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
473+, for a filter unit having adjustable supporting means or having plural supporting surfaces.
