GARRETT, Associate Judge.
This appeal from a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the Examiner, involves the patentability of five claims (being all the claims) of an application for patent on a method of distilling tar.
For illustrative purposes, we quote claims 19 and 26:
"19. The method of distilling tar and of producing pitch and oils therefrom and from hot tar laden coal distillation gases...
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