MR. JUSTICE BLACK delivered the opinion of the Court.
This is a suit brought in the District Court for infringement of two claims of a patent issued to one Holdsworth and assigned to the petitioner. One defense pleaded by the respondents was that Holdsworth was not the original inventor. When a patentee, "through inadvertence, accident, or mistake, and without any fraudulent or deceptive intention . . . has claimed more than that of which he was the original or first...
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