SMITH, Judge.
This appeal is from the decision of the Patent Office Board of Appeals which affirmed the Primary Examiner's rejection of claims 16 through 22 of the Alexander M. Wright application, serial No. 256,489, filed November 15, 1951, for "Vortex Pumps." No claims have been allowed.
The claims are intended to cover a liquid fuel supply system which consists essentially of a fuel pump driven by a variable speed drive having a driven
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