LENROOT, Associate Judge.
This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the Examiner, rejecting all of the claims of appellant's application, three in number, for want of invention in view of the prior art.
Claims 1 and 3 are illustrative, and read as follows:
"1. The method of separating adherent particles from an article which comprises subjecting said article to a series of...
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