L. HAND, Circuit Judge (after stating the facts as above).
We quite agree with the disposition of claims 3 and 4. When the original claims were rejected, the plaintiff, with full knowledge of the circumstances, expressly disavowed any claims in which the surface temperature should be lower than 270° F. He was scarcely under a mistake at the time; he had been confronted with Just's patent, in which that had been the higher limit, and he chose to take that part...
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