MR. JUSTICE GRAY delivered the opinion of the court.
This is a bill in equity for the infringement of letters-patent for an improvement in means for cooling and drying meal, reissued to John Denchfield, and duly assigned to the plaintiffs. The original letters-patent to Denchfield were dated 20th April, 1858. The reissued letters-patent were dated 16th January, 1872, and extended for a period of seven years from 20th April, 1872. The Circuit Court held that the first...
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