(under subclass 300) Cleaning apparatus in which the air-draft is induced by a fluid jet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408, for air blast cleaning devices where the blast induces a flow thereinto of the ambient air.
SEE OR SEARCH CLASS
406, Conveyors: Fluid Current,
153, for fluid current conveyors having a downstream jet pump for producing suction at the conveyor inlet.
417, Pumps, 151+, for details of jet pumps producing suction at an inlet member, and for a statement of the line see the reference to Class 417 in the definition of subclass 300 of this class
