HATFIELD, 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 claims 1 and 3 to 6, inclusive, in appellant's application for a patent relating to a hack saw blade. The claims were rejected on the grounds of indefiniteness and lack of invention over the prior art. Claims 7 and 8 were allowed by the Primary Examiner.
At the time of the oral argument in...
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