(under subclass 1) Processes involving the steps of changing the character of the flowing or discharged material or of regulating the flow.
(1) Note. The mere shifting of the distributor to change the flow from one area physically to another or the mere turning on or off are not considered modification or varying for purposes of this subclass and such patents will be found in subclass 1.
SEE OR SEARCH THIS CLASS, SUBCLASS:
290, all appropriate subclasses thereafter for discharge modification and flow varying.
