PER CURIAM.
This is an appeal in a patent infringement case, involving U. S. Patent No. 2,322,350 covering a process for reconditioning yarn cones. The court below held the patent invalid on the grounds of prior use and lack of invention. We think that this holding was so clearly correct as not to justify extended discussion. The process of the patent is covered by five claims, of which claim four may be taken as typical. It is as follows:
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