MARTIN, Judge.
This appeal is from a decision of the Patent Office Board of Appeals affirming the examiner's rejection of claims 1, 9, 10, 11, 12, 13, 14 and 15, the only remaining claims of appellant's application, serial No. 576,990, filed April 9, 1956 for a VALVE. The application relates to the construction of an air control valve of the spool type designed for "directing fluid to control apparatus such as cylinders and the like for machine tool operations and...
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