O'CONNELL, Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the action of the Primary Examiners in finally rejecting under the practice of dual prosecution claims 47, 48, and 49 of appellant's application for a patent on an improvement in a closure joint for effecting the sealing of an opening in a vessel or pipe line containing fluids under high pressure. Seventeen claims, 30 to 46, were allowed.
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