(under subclass 151) Apparatus comprising two or more distinct and individually operable means, all of which are positioned upstream of the same blade* row.
(1) Note. Excluded under this definition is a device having a plurality of adjustable vanes* or other working fluid* control means, which operate simultaneously, but each of which is so arranged as to yield independently of the others when obstructed. The only devices included under this definition are those where each of a plurality of vanes* or other working fluid* control means is selectively adjusted independently of the others.
