(under subclass 482) Apparatus in which the plurality of media are spaced across a flow stream so that each acts independently of the other upon only a portion of the gas stream so that the several media act substantially upon the gas at one time.
(1) Note. A single sheet type or running length separating
media which is supported in such a manner as to result in a divided gas flow therethrough by virtue of the support means blocking gas flow is not proper subject matter under this definition, but is classified in subclass 500.