HATFIELD, Associate Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the decision of the Primary Examiner rejecting all of the claims (Nos. 2, 12, 13, 15, 18, 20, 23, 25, 26, and 27) in appellant's application for a patent for an alleged invention relating to a method of hardening the inner wall of pump liners, cylinders, and like articles.
Claims 12, 13, 18, 20, and 27 are illustrative of the...
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