(under subclass 131) Apparatus in which the serial solid sorbent beds are of different types (e.g., material composition, particulate vs. sheet form, etc.).
(1) Note. Solid sorbent beds which are merely different in particle size or sheet thickness are not of "diverse type" and as such are not classified in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
134+, for plural diverse gas separating means with no more than one solid sorbent bed.
