LENROOT, Associate Judge.
This appeal brings before us for review a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the Examiner rejecting, in view of the prior art, claims 20, 21, and 22 of appellants' application. Certain claims have been allowed.
Claims 20 and 21 are illustrative and read as follows:
"20. In a device for supplying spinning solution to a plurality of nozzles, a supply pipe for spinning...
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