JACKSON, Associate Judge.
This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming that of the Primary Examiner rejecting, in view of the prior art, all of the claims, 11 to 19 inclusive, of an application for a patent for new and useful improvements in casting of hollow cast metal shapes.
Claims 11 and 13 are illustrative and read as follows:
"11. A method for the continuous casting of hollow metal castings...
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