SIMONS, Chief Judge.
In this patent suit involving the validity and infringement of U. S. Letters Patent 2,458,134, issued January 4, 1949 to Clark D. Belden, the district judge held all three of the claims invalid, on a number of grounds, without deciding the issue of infringement, and supported his ruling by an exhaustive and scholarly opinion applying recognized principles of the patent law. We refrain from repeating much therein contained because it is fully reported...
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