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 7, 8, and 9 in appellant's application for a patent relating to a catch-basin trap, comprising a tubular sleeve, adapted to be imbedded in the masonry of the catch-basin, and an ell-shaped member connected with the tubular sleeve by means of a bayonet joint, the joint being so constructed that...
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